binding: use the code for the Enter directly instead of a function call

And certainly don't return zero when the key wouldn't have been found,
because that would have meant jumping a word to the right.

src/browser.c

@@ -147,7 +147,7 @@ char *do_browser(char *path)
 		/* If we selected the same filename as last time, fake a
 		 * press of the Enter key so that the file is read in. */
 		if (old_selected == selected)
-		    unget_kbinput(the_code_for(do_enter, 0), FALSE);
+		    unget_kbinput(KEY_ENTER, FALSE);
 	    }
 
 	    continue;

src/prompt.c

@@ -148,7 +148,7 @@ int do_statusbar_input(bool *ran_func, bool *finished)
 	     * fake a press of Enter, and indicate that we're done. */
 	    if (got_newline) {
 		get_input(NULL, 1);
-		input = the_code_for(do_enter, 0);
+		input = KEY_ENTER;
 		*finished = TRUE;
 	    }
 	} else if (s->scfunc == do_cut_text_void)