Make every Python API __len__() method return a PyIntObject.

swig 2.0+ seems to default to using PyLongObjects, but the __len__()
method _must_ return a PyIntObject.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@156639 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/scripts/Python/interface/SBData.i b/scripts/Python/interface/SBData.i
index f90dd3e..6ca8f0b 100644
--- a/scripts/Python/interface/SBData.i
+++ b/scripts/Python/interface/SBData.i
@@ -156,7 +156,7 @@
                 else:
                     return my_data
             def __len__(self):
-                return self.sbdata.GetByteSize()/self.item_size
+                return int(self.sbdata.GetByteSize()/self.item_size)
             def all(self):
                 return self[0:len(self)]