Thread a TargetInfo through to the module map; we'll need it for
target-specific module requirements.

llvm-svn: 149224
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index abeb317..ff75e3a 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -673,7 +673,8 @@
                                      AST->getFileManager());
   AST->HeaderInfo.reset(new HeaderSearch(AST->getFileManager(),
                                          AST->getDiagnostics(),
-                                         AST->ASTFileLangOpts));
+                                         AST->ASTFileLangOpts,
+                                         /*Target=*/0));
   
   for (unsigned I = 0; I != NumRemappedFiles; ++I) {
     FilenameOrMemBuf fileOrBuf = RemappedFiles[I].second;