Fix a leak when TIFFRGBAImageBegin fails

third_party/libtiff/tif_getimage.c

 /* $Id: tif_getimage.c,v 1.90 2015-06-17 01:34:08 bfriesen Exp $ */
 
 /*
  * Copyright (c) 1991-1997 Sam Leffler
  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
  *
  * Permission to use, copy, modify, distribute, and sell this software and 
  * its documentation for any purpose is hereby granted without fee, provided
  * that (i) the above copyright notices and this permission notice appear in
  * all copies of the software and related documentation, and (ii) the names of
@@ skipping 460 matching lines @@
                 }
         } else {
                 if (!PickSeparateCase(img)) {
                         sprintf(emsg, "Sorry, can not handle image");
                         goto fail_return;
                 }
         }
         return 1;
 
   fail_return:
-        _TIFFfree( img->redcmap );
-        _TIFFfree( img->greencmap );
-        _TIFFfree( img->bluecmap );
-        img->redcmap = img->greencmap = img->bluecmap = NULL;
+        TIFFRGBAImageEnd(img);
         return 0;
 }
 
 int
 TIFFRGBAImageGet(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
 {
     if (img->get == NULL) {
                 TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup");
                 return (0);
         }
@@ skipping 2433 matching lines @@
 }
 
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 /*
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  * mode: c
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  * End:
  */