Fix a redundant-return warning.

llvm-svn: 104958
diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index 11cf0ec..93428f5 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -496,8 +496,9 @@
     return 0;
   // Return the preferred block size.
   return statbuf.st_blksize;
-#endif
+#else
   return raw_ostream::preferred_buffer_size();
+#endif
 }
 
 raw_ostream &raw_fd_ostream::changeColor(enum Colors colors, bool bold,