patch 8.2.3165: Vim9: in a || expression the error line number may be wrong

Problem:    Vim9: in a || expression the error line number may be wrong.
Solution:   Save and restore the line number when checking the type.
            (closes #8569)

src/testdir/test_vim9_expr.vim

@@ -401,6 +401,13 @@ def Test_expr2_fails()
     # comment
   END
   CheckScriptFailure(lines, 'E1004: White space required before and after ''||'' at "||true"', 3)
+
+  lines =<< trim END
+      var x = false
+              || false
+              || a.b
+  END
+  CheckDefFailure(lines, 'E1001:', 3)
 enddef
 
 " test &&

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3165,
 /**/
     3164,
 /**/

src/vim9compile.c

@@ -5095,6 +5095,7 @@ compile_and_or(
 	while (p[0] == opchar && p[1] == opchar)
 	{
 	    long	start_lnum = SOURCING_LNUM;
+	    long	save_sourcing_lnum;
 	    int		start_ctx_lnum = cctx->ctx_lnum;
 	    int		save_lnum;
 
@@ -5116,6 +5117,7 @@ compile_and_or(
 	    generate_ppconst(cctx, ppconst);
 
 	    // Every part must evaluate to a bool.
+	    save_sourcing_lnum = SOURCING_LNUM;
 	    SOURCING_LNUM = start_lnum;
 	    save_lnum = cctx->ctx_lnum;
 	    cctx->ctx_lnum = start_ctx_lnum;
@@ -5138,6 +5140,7 @@ compile_and_or(
 				 ?  JUMP_IF_COND_TRUE : JUMP_IF_COND_FALSE, 0);
 
 	    // eval the next expression
+	    SOURCING_LNUM = save_sourcing_lnum;
 	    if (may_get_next_line_error(p + 2, arg, cctx) == FAIL)
 	    {
 		ga_clear(&end_ga);