Fixed deprecated conversion warning and added some comments.

git-svn-id: https://svn.microneil.com/svn/CodeDweller/trunk@19 d34b734f-a00e-4b39-a726-e4eeb87269ab

networking.cpp

 // Error description handling for humans.
 
 string Networking::DescriptiveError(string Msg, int Errno) {                    // Form a descriptive error w/ errno.
-        char* s = 0;
+        string s = "";                                                          // Message string.
 
-        switch(Errno) {
+        switch(Errno) {                                                         // Assign the appropriate message.
             case WSA_INVALID_HANDLE: s = "WSA_INVALID_HANDLE"; break;
             case WSA_NOT_ENOUGH_MEMORY: s = "WSA_NOT_ENOUGH_MEMORY"; break;
             case WSA_INVALID_PARAMETER: s = "WSA_INVALID_PARAMETER"; break;
 #endif
         }
 
-        Msg.append(" ");
-        if(s) {
-            Msg.append(s);
+        Msg.append(" ");                                                        // Add a space to the existing message.
+        if(0 < s.length()) {                                                    // If we know the message for Errno
+            Msg.append(s);                                                      // then append it.
         }
-        else  {
-            ostringstream ErrNoMsg;
-            ErrNoMsg << " UNKNOWN ErrorNumber = " << Errno;
+        else  {                                                                 // If we don't know what Errno means
+            ostringstream ErrNoMsg;                                             // then say so and pass on Errno as
+            ErrNoMsg << " UNKNOWN ErrorNumber = " << Errno;                     // well so someone can figure it out.
             Msg.append(ErrNoMsg.str());
         }
         return Msg;