Do not crash on special chars in the content of message

That’s ugly, and we need to sanitize everything properly, and also handle
these special messages.

src/bridge/colors.cpp

@@ -11,7 +11,11 @@ void remove_irc_colors(std::string& str)
                              if (c == IRC_COLOR_BOLD_CHAR || c == IRC_COLOR_COLOR_CHAR ||
                                  c == IRC_COLOR_FIXED_CHAR || c == IRC_COLOR_RESET_CHAR ||
                                  c == IRC_COLOR_REVERSE_CHAR || c == IRC_COLOR_REVERSE2_CHAR ||
-                                 c == IRC_COLOR_UNDERLINE_CHAR || c == IRC_COLOR_ITALIC_CHAR)
+                                 c == IRC_COLOR_UNDERLINE_CHAR || c == IRC_COLOR_ITALIC_CHAR ||
+                                 // HACK: until we properly handle things
+                                 // like ^AVERSION^A, remove the ^A chars
+                                 // here.
+                                 c == '\u0001')
                                return true;
                              return false;
                            }