make sure we have a definition of uintptr_t.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63019 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Basic/SourceManager.h b/include/clang/Basic/SourceManager.h
index d8c17e1..41c2def 100644
--- a/include/clang/Basic/SourceManager.h
+++ b/include/clang/Basic/SourceManager.h
@@ -16,6 +16,7 @@
 
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/Bitcode/SerializationFwd.h"
+#include "llvm/Support/DataTypes.h"
 #include <vector>
 #include <set>
 #include <list>