(svn r15135) -Fix/Change: allow str_validate (part of receiving strings from the network) to pass newlines instead of replacing them with question marks, but only when asked to do so.

src/string_func.h

@@ -95,7 +95,7 @@ char *CDECL str_fmt(const char *str, ...);
 
 /** Scans the string for valid characters and if it finds invalid ones,
  * replaces them with a question mark '?' */
-void str_validate(char *str);
+void str_validate(char *str, bool allow_newlines = false);
 
 /** Scans the string for colour codes and strips them */
 void str_strip_colours(char *str);