deal with two error cases

Signed-off-by: Patrick McCarty <patrick.mccarty@intel.com>

src/diff.c

@@ -3,7 +3,7 @@
  * All rights reserved
  *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions 
+ * modification, are permitted providing that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ -445,7 +445,7 @@ int make_bsdiff_delta(char *old_filename, char *new_filename, char *delta_filena
 		memset(&small_header, 0, sizeof(struct header_v21));
 		memcpy(&small_header.magic, BSDIFF_HDR_FULLDL, 8);
 
-		efd = open(delta_filename, O_CREAT | O_EXCL | O_WRONLY, 00644);
+		efd = open(delta_filename_unique, O_CREAT | O_EXCL | O_WRONLY, 00644);
 		if (efd < 0) {
 			close(fd);
 			return -1;
@@ -462,6 +462,7 @@ int make_bsdiff_delta(char *old_filename, char *new_filename, char *delta_filena
 		}
 		fclose(pf);
 		close(fd);
+		rename(delta_filename_unique, delta_filename);		
 		return 1;
 	}
 
@@ -527,7 +528,7 @@ int make_bsdiff_delta(char *old_filename, char *new_filename, char *delta_filena
 		memset(&small_header, 0, sizeof(struct header_v21));
 		memcpy(&small_header.magic, BSDIFF_HDR_FULLDL, 8);
 
-		efd = open(delta_filename, O_CREAT | O_EXCL | O_WRONLY, 00644);
+		efd = open(delta_filename_unique, O_CREAT | O_EXCL | O_WRONLY, 00644);
 		if (efd < 0) {
 			close(fd);
 			munmap(old_data, old_size);
@@ -553,6 +554,7 @@ int make_bsdiff_delta(char *old_filename, char *new_filename, char *delta_filena
 		close(fd);
 		munmap(old_data, old_size);
 		free(I);
+		rename(delta_filename_unique, delta_filename);
 		return 1;
 	}
 

src/diff_main.c

@@ -4,7 +4,7 @@
  *      Copyright © 2012-2016 Intel Corporation.
  *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions 
+ * modification, are permitted providing that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.

src/dump_main.c

@@ -4,7 +4,7 @@
  *      Copyright © 2012-2016 Intel Corporation.
  *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions 
+ * modification, are permitted providing that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.

src/patch.c

@@ -3,7 +3,7 @@
  * All rights reserved
  *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions 
+ * modification, are permitted providing that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.

src/patch_main.c

@@ -4,7 +4,7 @@
  *      Copyright © 2012-2016 Intel Corporation.
  *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions 
+ * modification, are permitted providing that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.

src/sufsort.c

@@ -3,7 +3,7 @@
  * All rights reserved
  *
  * Redistribution and use in source and binary forms, with or without
- * modification, are permitted providing that the following conditions 
+ * modification, are permitted providing that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.