Fix decoding of ARM-mode STRH.

llvm-svn: 137499
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
index 7de0c23..b3db849 100644
--- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
+++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
@@ -1090,6 +1090,9 @@
     case ARM::STRD:
     case ARM::STRD_PRE:
     case ARM::STRD_POST:
+    case ARM::STRH:
+    case ARM::STRH_PRE:
+    case ARM::STRH_POST:
       if (!DecodeGPRRegisterClass(Inst, Rn, Address, Decoder))
         return false;
       break;