Fixed leak in MString when assigning from another MString.

ZString.cpp

@@ -46,7 +46,6 @@ namespace coreutils {
       data = zstring.data;
       length = zstring.length;
       cursor = zstring.cursor;
-      //      Log(LOG_DEBUG_2) << "ZString Copy Constructor: ";
    }
 
    ZString::ZString(std::string &data) {
@@ -55,12 +54,6 @@ namespace coreutils {
       cursor = (char *)data.c_str();
    }
 
-//   ZString::ZString(std::string data) {
-//      this->data = (char *)data.c_str();
-//      length = data.length();
-//      cursor = (char *)data.c_str();
-//   }
-
    ZString::~ZString() {
       if(cdata != NULL)
         free(cdata);