We'll return a null RC by default if we can't match.

Part of rdar://9119939


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134217 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 22cd78f..1141f42 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -7544,8 +7544,7 @@
     case 'h': // High regs or no regs.
       if (Subtarget->isThumb())
 	return RCPair(0U, ARM::hGPRRegisterClass);
-      else
-	return RCPair(0U, static_cast<const TargetRegisterClass*>(0));
+      break;
     case 'r':
       return RCPair(0U, ARM::GPRRegisterClass);
     case 'w':