Make the missing function actually match the declaration.

xrdp-0.9.17-missing-rfb-func.patch

@@ -1,12 +1,12 @@
 diff -ruN xrdp-0.9.17-v/vnc/vnc.c xrdp-0.9.17/vnc/vnc.c
 --- xrdp-0.9.17-v/vnc/vnc.c	2021-09-01 11:30:54.000000000 +1000
-+++ xrdp-0.9.17/vnc/vnc.c	2021-09-06 07:11:11.863754188 +1000
++++ xrdp-0.9.17/vnc/vnc.c	2021-09-06 07:22:39.680347055 +1000
 @@ -1194,6 +1194,13 @@
      return error;
  }
  
 +/* Trivially implement missing function */
-+static const char *
++const char *
 +rfb_get_eds_status_msg(unsigned int response_code)
 +{
 +    return "";