MachineFunction: Return reference for getFrameInfo(); NFC

getFrameInfo() never returns nullptr so we should use a reference
instead of a pointer.

llvm-svn: 277017
diff --git a/llvm/lib/CodeGen/AsmPrinter/WinException.cpp b/llvm/lib/CodeGen/AsmPrinter/WinException.cpp
index e5933d8..2dd95a7 100644
--- a/llvm/lib/CodeGen/AsmPrinter/WinException.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/WinException.cpp
@@ -966,11 +966,11 @@
 
     // Retrieve the Guard Stack slot.
     int GSCookieOffset = -2;
-    const MachineFrameInfo *MFI = MF->getFrameInfo();
-    if (MFI->hasStackProtectorIndex()) {
+    const MachineFrameInfo &MFI = MF->getFrameInfo();
+    if (MFI.hasStackProtectorIndex()) {
       unsigned UnusedReg;
       const TargetFrameLowering *TFI = MF->getSubtarget().getFrameLowering();
-      int SSPIdx = MFI->getStackProtectorIndex();
+      int SSPIdx = MFI.getStackProtectorIndex();
       GSCookieOffset = TFI->getFrameIndexReference(*MF, SSPIdx, UnusedReg);
     }