Fix another compiler warning (STR 3529)

fluid/template_panel.{fl|cxx}:

  .../fluid/template_panel.cxx:261:44: warning: ‘%s’ directive output
  may be truncated writing up to 255 bytes into a region of size
  between 0 and 1023 [-Wformat-truncation=]

Solution: increase buffer size from 1024 to 1400.

fluid/template_panel.cxx

@@ -213,7 +213,7 @@ void template_delete_cb(Fl_Button *, void *) {
 
 void template_load() {
   int i;
-  char name[1024], filename[1024], path[1024], *ptr;
+  char name[1024], filename[1400], path[1024], *ptr;
   struct dirent **files;
   int num_files;
   

fluid/template_panel.fl

@@ -209,7 +209,7 @@ template_browser->do_callback();} {}
 Function {template_load()} {open return_type void
 } {
   code {int i;
-char name[1024], filename[1024], path[1024], *ptr;
+char name[1024], filename[1400], path[1024], *ptr;
 struct dirent **files;
 int num_files;