Silence a GCC warning about not handling all flags in this switch, we
specifically assert on unexpected flags.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115143 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp
index a5f9c2d..a069505 100644
--- a/lib/MC/MCMachOStreamer.cpp
+++ b/lib/MC/MCMachOStreamer.cpp
@@ -158,9 +158,9 @@
   case MCAF_SubsectionsViaSymbols:
     getAssembler().setSubsectionsViaSymbols(true);
     return;
+  default:
+    llvm_unreachable("invalid assembler flag!");
   }
-
-  assert(0 && "invalid assembler flag!");
 }
 
 void MCMachOStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {