patch 8.0.0654: no warning for text after :endfunction

Problem:    Text found after :endfunction is silently ignored.
Solution:   Give a warning if 'verbose' is set.  When | or \n are used,
            execute the text as a command.
diff --git a/src/userfunc.c b/src/userfunc.c
index 859e6eb..de089bb 100644
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -2130,6 +2130,14 @@
 	    /* Check for "endfunction". */
 	    if (checkforcmd(&p, "endfunction", 4) && nesting-- == 0)
 	    {
+		if (*p == '|')
+		    /* Another command follows. */
+		    eap->nextcmd = vim_strsave(p + 1);
+		else if (line_arg != NULL && *skipwhite(line_arg) != NUL)
+		    /* Another command follows. */
+		    eap->nextcmd = line_arg;
+		else if (*p != NUL && *p != '"' && p_verbose > 0)
+		    EMSG2((char_u *)_("E946: Text found after :endfunction: %s"), p);
 		if (line_arg == NULL)
 		    vim_free(theline);
 		break;