patch 8.1.1182: some function prototypes are outdated

Problem:    Some function prototypes are outdated.
Solution:   Update function prototypes. (Ken Takata, closes #4267)
diff --git a/src/proto/terminal.pro b/src/proto/terminal.pro
index 0fa62b7..996db6d 100644
--- a/src/proto/terminal.pro
+++ b/src/proto/terminal.pro
@@ -56,7 +56,7 @@
 void f_term_wait(typval_T *argvars, typval_T *rettv);
 void term_send_eof(channel_T *ch);
 job_T *term_getjob(term_T *term);
-int terminal_enabled(void);
 void term_free_conpty(term_T *term);
 int use_conpty(void);
+int terminal_enabled(void);
 /* vim: set ft=c : */