Make bad xml-rpc methods return xml error message rather than http error message, fixing #108

src/conf.c

@@ -30,6 +30,7 @@
 #  include "config.h"
 #endif
 
+#include <ctype.h>
 #include <errno.h>
 #include <limits.h>
 #include <pthread.h>

src/xml-rpc.c

@@ -313,7 +313,7 @@ void xml_handle(WS_CONNINFO *pwsc) {
 	return;
     }
 
-    ws_returnerror(pwsc,500,"Invalid method");
+    xml_return_error(pwsc,500,"Invalid method");
     return;
 }