minor speed optimization

diff --git a/src/stringfunc.cpp b/src/stringfunc.cpp
index 338e3b1..f41f9c6 100644 (file)
--- a/src/stringfunc.cpp
+++ b/src/stringfunc.cpp
@@ -924,7 +924,8 @@ std::string sanitize_for_logging(const std::string &str, const char replace_with
 {
     std::string output=str;
 
-    for (std::string::size_type p=0; p < output.size(); p++)
+    const string::size_type len = output.size();
+    for (std::string::size_type p=0; p < len; p++)
         if (output[p] < 0x20 || output[p] > 0x7E)
             output[p]=replace_with;