Gst.py: raise an error if we can't unmap the memory

diff --git a/gi/overrides/Gst.py b/gi/overrides/Gst.py
index e7eeb29..edf347b 100644 (file)
--- a/gi/overrides/Gst.py
+++ b/gi/overrides/Gst.py
@@ -649,7 +649,8 @@ class Memory(Gst.Memory):
 
     def unmap(self, mapinfo):
         mapinfo.__parent__ = None
-        return _gi_gst.memory_override_unmap(self, mapinfo)
+        if _gi_gst.memory_override_unmap(self, mapinfo) is not True:
+            raise MapError('UnmappingError','Memory unmapping was not successfull')
 
 Memory = override(Memory)
 __all__.append('Memory')