An 'unreachable' shouldn't have a '0 &&' prefix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119762 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMMCCodeEmitter.cpp b/lib/Target/ARM/ARMMCCodeEmitter.cpp
index 6592dcf..8cf31e7 100644
--- a/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -421,8 +421,8 @@
     }
     Fixups.push_back(MCFixup::Create(0, Expr, Kind));
     return 0;
-  };
-  llvm_unreachable(0 && "Unsupported MCExpr type in MCOperand");
+  }
+  llvm_unreachable("Unsupported MCExpr type in MCOperand");
   return 0;
 }