fix https://github.com/ImageMagick/ImageMagick6/issues/427 - problem
introduced by 98153baf2e6 (mis-merge from b1db40da509 in 7.x)

"ImageMagick 6 will only receive security updates and this does
not seem to be a security issue".

Index: magick/constitute.c
--- magick/constitute.c.orig
+++ magick/constitute.c
@@ -1193,8 +1193,7 @@ MagickExport MagickBooleanType WriteImage(const ImageI
   if ((image->ping != MagickFalse) &&
       (SyncImagePixelCache(image,exception) == MagickFalse))
     return(MagickFalse);
-  if (SyncImageProfiles(image) == MagickFalse)
-    return(MagickFalse);
+  SyncImageProfiles(image) == MagickFalse;
   DisassociateImageStream(image);
   option=GetImageOption(image_info,"delegate:bimodal");
   if ((option != (const char *) NULL) &&
