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Ensure expected signature in ExceptionInfo before destroy

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GraphicsMagick asserts this in DestroyExceptionInfo

read_free is called multiple times since fc5a4a9
This commit is contained in:
Lovell Fuller 2015-04-15 20:05:19 +01:00
parent d8ea72895a
commit e4326fc9ad
1 changed files with 3 additions and 1 deletions
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4
libvips/foreign/magick2vips.c
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@ -143,7 +143,9 @@ read_free( Read *read )
VIPS_FREEF( DestroyImage, read->image );
VIPS_FREEF( DestroyImageInfo, read->image_info );
VIPS_FREE( read->frames );
DestroyExceptionInfo( &read->exception );
if ( (&read->exception)->signature == MagickSignature ) {
DestroyExceptionInfo( &read->exception );
}
VIPS_FREEF( vips_g_mutex_free, read->lock );
}