[ARM] Fix -Wimplicit-fallthrough after D60709/r364331

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@364376 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 68a6365..edf5090 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -14095,10 +14095,10 @@
         return RCPair(0U, &ARM::QPR_VFP2RegClass);
       break;
     }
+    break;
 
   case 2:
-    switch (Constraint[0]) {
-    case 'T':
+    if (Constraint[0] == 'T') {
       switch (Constraint[1]) {
       default:
         break;
@@ -14107,9 +14107,8 @@
       case 'o':
         return RCPair(0U, &ARM::tGPROddRegClass);
       }
-    default:
-      break;
     }
+    break;
 
   default:
     break;