Have asm printers use formatted_raw_ostream directly to avoid a
dynamic_cast<>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75670 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index 42e6fda..23a756e 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -166,7 +166,7 @@
   case 0: break;
   default:
     // Normally the string to emit is shorter than the buffer.
-    if (Size <= unsigned(OutBufEnd-OutBufStart)) {
+    if (Size <= unsigned(OutBufEnd-OutBufCur)) {
       memcpy(OutBufCur, Ptr, Size);
       break;
     }