patch 8.2.3004: Vim9: error for missing colon given while skipping

Problem:    Vim9: error for missing colon given while skipping.
Solution:   Do not give the error when skipping. (closes #8385)

src/ex_docmd.c

@@ -1844,7 +1844,7 @@ do_one_cmd(
 
 	    // If a ':' before the range is missing, give a clearer error
 	    // message.
-	    if (ar > ea.cmd)
+	    if (ar > ea.cmd && !ea.skip)
 	    {
 		semsg(_(e_colon_required_before_range_str), ea.cmd);
 		goto doend;

src/testdir/test_vim9_script.vim

@@ -590,6 +590,19 @@ def Test_try_catch_throw()
     return 2
   enddef
   assert_equal(4, ReturnInFinally())
+
+  var lines =<< trim END
+      vim9script
+      try
+        acos('0.5')
+          ->setline(1)
+      catch
+        g:caught = v:exception
+      endtry
+  END
+  CheckScriptSuccess(lines)
+  assert_match('E808: Number or Float required', g:caught)
+  unlet g:caught
 enddef
 
 " :while at the very start of a function that :continue jumps to

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3004,
 /**/
     3003,
 /**/