Index: editors/patch.c
===================================================================
--- editors/patch.c	(revision 18333)
+++ editors/patch.c	(working copy)
@@ -263,7 +263,8 @@
 				if (unlink(new_filename) == -1) {
 					bb_perror_msg_and_die("cannot remove file %s", new_filename);
 				}
-				if (unlink(original_filename) == -1) {
+				if (strcmp(new_filename, original_filename)
+				    && (unlink(original_filename) == -1)) {
 					bb_perror_msg_and_die("cannot remove original file %s", new_filename);
 				}
 			}