patch 8.2.2446: setting 'term' empty has different error if compiled with GUI

Problem:    Setting 'term' empty has different error if compiled with GUI.
Solution:   Insert "else". (closes #7766)
diff --git a/src/optionstr.c b/src/optionstr.c
index 8f3f0c5..c8a5b0c 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -687,7 +687,7 @@
 	if (T_NAME[0] == NUL)
 	    errmsg = N_("E529: Cannot set 'term' to empty string");
 #ifdef FEAT_GUI
-	if (gui.in_use)
+	else if (gui.in_use)
 	    errmsg = N_("E530: Cannot change term in GUI");
 	else if (term_is_gui(T_NAME))
 	    errmsg = N_("E531: Use \":gui\" to start the GUI");
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index cc02c5c..c8b2700 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -484,12 +484,10 @@
   set ttytype=xterm
   call assert_equal('xterm', &ttytype)
   call assert_equal(&ttytype, &term)
-  " "set ttytype=" gives E522 instead of E529
-  " in travis on some builds. Why?  Catch both for now
   try
     set ttytype=
     call assert_report('set ttytype= did not fail')
-  catch /E529\|E522/
+  catch /E529/
   endtry
 
   " Some systems accept any terminal name and return dumb settings,
diff --git a/src/version.c b/src/version.c
index 9fa14cb..bba9da8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2446,
+/**/
     2445,
 /**/
     2444,