Null initialize a few variables flagged by
clang's -Wuninitialized-experimental warning.
While these don't look like real bugs, clang's
-Wuninitialized-experimental analysis is stricter
than GCC's, and these fixes have the benefit
of being general nice cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124073 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
index 4191d68..7e9d217 100644
--- a/lib/Target/ARM/ARMExpandPseudoInsts.cpp
+++ b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
@@ -518,7 +518,7 @@
   }
   assert(Lane < RegElts && "out of range lane for VLD/VST-lane");
 
-  unsigned D0, D1, D2, D3;
+  unsigned D0 = 0, D1 = 0, D2 = 0, D3 = 0;
   unsigned DstReg = 0;
   bool DstIsDead = false;
   if (TableEntry->IsLoad) {