From eff53e95f9a4a504417026493b83c75a5e1bdfd3 Mon Sep 17 00:00:00 2001
From: Roman Donchenko <roman.donchenko@itseez.com>
Date: Mon, 11 Nov 2013 18:02:56 +0400
Subject: [PATCH] Fixed the "image sequence" capture not failing when a pattern
 isn't found.

at can't be a null pointer, so the condition was always false, and
a nonsensical pattern like "image.png%00d" was being inferred.
---
 modules/highgui/src/cap_images.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/highgui/src/cap_images.cpp b/modules/highgui/src/cap_images.cpp
index 4cf51d8e5d..e2feb0d279 100644
--- a/modules/highgui/src/cap_images.cpp
+++ b/modules/highgui/src/cap_images.cpp
@@ -203,7 +203,7 @@ static char* icvExtractPattern(const char *filename, unsigned *offset)
         for(at = name; *at && !isdigit(*at); at++)
             ;
 
-        if(!at)
+        if(!*at)
             return 0;
 
         sscanf(at, "%u", offset);