Fixed string comparison in IniFile that could cause wrong keys to be used.

IdealIRC/IniFile.cpp

@@ -29,6 +29,9 @@ namespace {
 */
 bool strEquals(const std::string& l, const std::string& r)
 {
+    if (l.size() != r.size())
+        return false;
+    
     return std::equal(l.begin(), l.end(), r.begin(),
         [](char cl, char cr) {
             return toupper(cl) == toupper(cr);