commit a9239a9fe6cedd897d27580d15772099e172ac38
author Cristy <urban-warrior@imagemagick.org> Sat Sep 30 11:09:55 2017 -0400
committer Cristy <urban-warrior@imagemagick.org> Sat Sep 30 11:09:55 2017 -0400
tree e5d20079470931c32217228f5ce0e013e28c226f
parent f02ffadbaecb94b7bb272a983f29a14e6e026bab

https://github.com/ImageMagick/ImageMagick/issues/818

MagickCore/effect.c

diff --git a/MagickCore/effect.c b/MagickCore/effect.c
index 26763c2..614ae37 100644
--- a/MagickCore/effect.c
+++ b/MagickCore/effect.c
@@ -2851,6 +2851,10 @@
   if ((cos_theta == (double *) NULL) ||
       (sin_theta == (double *) NULL))
     {
+      if (cos_theta != (double *) NULL)
+        cos_theta=(double *) RelinquishMagickMemory(cos_theta);
+      if (sin_theta != (double *) NULL)
+        sin_theta=(double *) RelinquishMagickMemory(sin_theta);
       blur_image=DestroyImage(blur_image);
       ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
     }