fix potential deadlock in create_one_file

It can happen if the temporary file already exists (i.e. after a panic
and reboot).

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

apply.c

@@ -1635,7 +1635,8 @@ static void create_one_file(const char *path, unsigned mode, const char *buf, un
 			}
 			if (errno != EEXIST)
 				break;
-		}			
+			++nr;
+		}
 	}
 	die("unable to write file %s mode %o", path, mode);
 }