Fix a bunch of unused variable warnings when doing a release
build with gcc-4.6.

llvm-svn: 142350
diff --git a/llvm/lib/Target/X86/X86FrameLowering.cpp b/llvm/lib/Target/X86/X86FrameLowering.cpp
index 07e0d0e..d54f4ae 100644
--- a/llvm/lib/Target/X86/X86FrameLowering.cpp
+++ b/llvm/lib/Target/X86/X86FrameLowering.cpp
@@ -1113,9 +1113,7 @@
       // Skip the saved EBP.
       Offset += RI->getSlotSize();
     } else {
-      unsigned Align = MFI->getObjectAlignment(FI);
-      assert((-(Offset + StackSize)) % Align == 0);
-      Align = 0;
+      assert((-(Offset + StackSize)) % MFI->getObjectAlignment(FI) == 0);
       return Offset + StackSize;
     }
     // FIXME: Support tail calls
@@ -1267,7 +1265,7 @@
                                           true);
     assert(FrameIdx == MFI->getObjectIndexBegin() &&
            "Slot for EBP register must be last in order to be found!");
-    FrameIdx = 0;
+    (void)FrameIdx;
   }
 }