From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 28 Dec 2016 00:15:56 +0000 (-0500)
Subject: Don't throw an exception if the image histogram has no colors
X-Git-Tag: 7.0.4-1~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=acfe438d8aa63fd8c2f59b1296ecaf001bd337de;p=imagemagick

Don't throw an exception if the image histogram has no colors
---

diff --git a/MagickCore/histogram.c b/MagickCore/histogram.c
index ab2cbcf1a..04c56eca0 100644
--- a/MagickCore/histogram.c
+++ b/MagickCore/histogram.c
@@ -533,7 +533,7 @@ MagickExport PixelInfo *GetImageHistogram(const Image *image,
   cube_info=ClassifyImageColors(image,exception);
   if (cube_info != (CubeInfo *) NULL)
     {
-      histogram=(PixelInfo *) AcquireQuantumMemory((size_t) cube_info->colors,
+      histogram=(PixelInfo *) AcquireQuantumMemory((size_t) cube_info->colors+1,
         sizeof(*histogram));
       if (histogram == (PixelInfo *) NULL)
         (void) ThrowMagickException(exception,GetMagickModule(),