[PowerPC] fix up in rL324229, NFC

This patch fixes up my previous commit (add initialization of local variables).

llvm-svn: 324336
diff --git a/llvm/lib/Target/PowerPC/PPCCTRLoops.cpp b/llvm/lib/Target/PowerPC/PPCCTRLoops.cpp
index e853a3c..ae9b8c5 100644
--- a/llvm/lib/Target/PowerPC/PPCCTRLoops.cpp
+++ b/llvm/lib/Target/PowerPC/PPCCTRLoops.cpp
@@ -535,7 +535,7 @@
     if (!TI) continue;
 
     if (BranchInst *BI = dyn_cast<BranchInst>(TI)) {
-      uint64_t TrueWeight, FalseWeight;
+      uint64_t TrueWeight = 0, FalseWeight = 0;
       if (!BI->isConditional() ||
           !BI->extractProfMetadata(TrueWeight, FalseWeight))
         continue;