Tweak an assert message in the verifier

llvm-svn: 329387
diff --git a/llvm/lib/IR/Verifier.cpp b/llvm/lib/IR/Verifier.cpp
index cd24915..6864608 100644
--- a/llvm/lib/IR/Verifier.cpp
+++ b/llvm/lib/IR/Verifier.cpp
@@ -2916,7 +2916,7 @@
 
   // Check the return.
   ReturnInst *Ret = dyn_cast_or_null<ReturnInst>(Next);
-  Assert(Ret, "musttail call must be precede a ret with an optional bitcast",
+  Assert(Ret, "musttail call must precede a ret with an optional bitcast",
          &CI);
   Assert(!Ret->getReturnValue() || Ret->getReturnValue() == RetVal,
          "musttail call result must be returned", Ret);