Check HTTP status on all requests

src/github/Label.py

@@ -30,6 +30,8 @@ class Label( object ):
             None,
             None
         )
+        if self.__requester.isFailureStatus( status ): # pragma no branch
+            raise GithubException( status, data ) # pragma no cover
 
     def edit( self, name, color ):
         assert isinstance( name, ( str, unicode ) ), name
@@ -44,6 +46,8 @@ class Label( object ):
             None,
             post_parameters
         )
+        if self.__requester.isFailureStatus( status ): # pragma no branch
+            raise GithubException( status, data ) # pragma no cover
         self.__useAttributes( data )
 
     @property