[InstrProfiling][NFC] Initialize MadeChange variable

This addresses an issue introduced in 389dc94d4be7 which triggers
a crash on Windows.

diff --git a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
index 36762d1..d2620fd 100644 (file)
--- a/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
+++ b/llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
@@ -556,7 +556,7 @@ bool InstrProfiling::run(
   UsedVars.clear();
   TT = Triple(M.getTargetTriple());
 
-  bool MadeChange;
+  bool MadeChange = false;
 
   // Emit the runtime hook even if no counters are present.
   if (needsRuntimeHookUnconditionally(TT))