Chris Jefferson noted many places where function calls needed to be qualified (thanks Chris).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@125510 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/strstream.cpp b/src/strstream.cpp
index d0a0ab0..ef12f98 100644
--- a/src/strstream.cpp
+++ b/src/strstream.cpp
@@ -302,7 +302,7 @@
         {
             char* newpos = eback() + newoff;
             if (pos_in)
-                setg(eback(), newpos, max(newpos, egptr()));
+                setg(eback(), newpos, _STD::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, max(newpos, egptr()));
+                    setg(eback(), newpos, _STD::max(newpos, egptr()));
                 if (pos_out)
                 {
                     // min(pbase, newpos), newpos, epptr()