Bitcode: Don't expose WriteBitcodeToStream to clients.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151747 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index 0e8d3ac..7078169 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -1823,6 +1823,7 @@
   }
 }
 
+static void WriteBitcodeToStream(const Module *M, BitstreamWriter &Stream);
 
 /// WriteBitcodeToFile - Write the specified module to the specified output
 /// stream.
@@ -1838,9 +1839,7 @@
   Out.write((char*)&Buffer.front(), Buffer.size());
 }
 
-/// WriteBitcodeToStream - Write the specified module to the specified output
-/// stream.
-void llvm::WriteBitcodeToStream(const Module *M, BitstreamWriter &Stream) {
+static void WriteBitcodeToStream(const Module *M, BitstreamWriter &Stream) {
   // If this is darwin or another generic macho target, emit a file header and
   // trailer if needed.
   Triple TT(M->getTargetTriple());