Fix build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114292 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMMCCodeEmitter.cpp b/lib/Target/ARM/ARMMCCodeEmitter.cpp
index ceb7dde..56573aa 100644
--- a/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -38,6 +38,7 @@
 
   unsigned getNumFixupKinds() const {
     assert(0 && "ARMMCCodeEmitter::getNumFixupKinds() not yet implemented.");
+    return 0;
   }
 
   const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const {