_STD -> _VSTD to avoid macro clash on windows

llvm-svn: 134190
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: ce48a1137d56d368828d360e5f2a8162bac6517c
diff --git a/src/strstream.cpp b/src/strstream.cpp
index ef12f98..c2b7f42 100644
--- a/src/strstream.cpp
+++ b/src/strstream.cpp
@@ -150,10 +150,10 @@
 strstreambuf::swap(strstreambuf& __rhs)
 {
     streambuf::swap(__rhs);
-    _STD::swap(__strmode_, __rhs.__strmode_);
-    _STD::swap(__alsize_, __rhs.__alsize_);
-    _STD::swap(__palloc_, __rhs.__palloc_);
-    _STD::swap(__pfree_, __rhs.__pfree_);
+    _VSTD::swap(__strmode_, __rhs.__strmode_);
+    _VSTD::swap(__alsize_, __rhs.__alsize_);
+    _VSTD::swap(__palloc_, __rhs.__palloc_);
+    _VSTD::swap(__pfree_, __rhs.__pfree_);
 }
 
 void
@@ -302,7 +302,7 @@
         {
             char* newpos = eback() + newoff;
             if (pos_in)
-                setg(eback(), newpos, _STD::max(newpos, egptr()));
+                setg(eback(), newpos, _VSTD::max(newpos, egptr()));
             if (pos_out)
             {
                 // min(pbase, newpos), newpos, epptr()
@@ -332,7 +332,7 @@
             {
                 char* newpos = eback() + newoff;
                 if (pos_in)
-                    setg(eback(), newpos, _STD::max(newpos, egptr()));
+                    setg(eback(), newpos, _VSTD::max(newpos, egptr()));
                 if (pos_out)
                 {
                     // min(pbase, newpos), newpos, epptr()