MC/Mach-O: Fix regression introduced in r126127, this assignment shouldn't have
been removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127812 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/DarwinAsmParser.cpp b/lib/MC/MCParser/DarwinAsmParser.cpp
index e1f49c2..f01f866 100644
--- a/lib/MC/MCParser/DarwinAsmParser.cpp
+++ b/lib/MC/MCParser/DarwinAsmParser.cpp
@@ -434,7 +434,8 @@
 
 
   StringRef Segment, Section;
-  unsigned TAA, StubSize;
+  unsigned StubSize;
+  unsigned TAA = 0;
   std::string ErrorStr =
     MCSectionMachO::ParseSectionSpecifier(SectionSpec, Segment, Section,
                                           TAA, StubSize);