Fold variable that's only used in assert into the assert.

Avoids unused variable warnings in Release builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183512 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCInstrInfo.cpp b/lib/Target/PowerPC/PPCInstrInfo.cpp
index e2d870d..a3eeb20 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -74,8 +74,7 @@
   // Most subtargets use a PPC970 recognizer.
   if (Directive != PPC::DIR_440 && Directive != PPC::DIR_A2 &&
       Directive != PPC::DIR_E500mc && Directive != PPC::DIR_E5500) {
-    const TargetInstrInfo *TII = TM.getInstrInfo();
-    assert(TII && "No InstrInfo?");
+    assert(TM.getInstrInfo() && "No InstrInfo?");
 
     return new PPCHazardRecognizer970(TM);
   }