minor cleanup, std namespacing

Added std namespace to places where there is a cpp version.

Change-Id: I60a05a7c9cdcd79cfffc3c4968005fcbe34acf81
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/phosphor-rsyslog-config/server-conf.cpp b/phosphor-rsyslog-config/server-conf.cpp
index 4bf167c..836e83b 100644
--- a/phosphor-rsyslog-config/server-conf.cpp
+++ b/phosphor-rsyslog-config/server-conf.cpp
@@ -13,6 +13,8 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 
+#include <string>
+
 namespace phosphor
 {
 namespace rsyslog_config
@@ -131,7 +133,7 @@
     std::fstream stream(filePath, std::fstream::in);
     std::string line;
 
-    getline(stream, line);
+    std::getline(stream, line);
 
     // Ignore if line is commented
     if ('#' != line.at(0))