(my_type_of): remove unreachable code.

Found by Clang 4.0.1.

edit.c:896:16: error: 'return' will never be executed [-Werror,-Wunreachable-code-return]
        return 0x80000000UL;
               ^~~~~~~~~~~~

(whole my_type_of() is suspect)

Signed-off-by: Andreas Mohr <and@gmx.li>
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

src/editor/edit.c

@@ -890,11 +890,8 @@ my_type_of (int c)
     if (c == 0)
         return 0;
     if (c == '!')
-    {
-        if (*option_chars_move_whole_word == '!')
-            return 2;
-        return 0x80000000UL;
-    }
+        return 2;
+
     if (g_ascii_isupper ((gchar) c))
         c = 'A';
     else if (g_ascii_islower ((gchar) c))