patch 8.2.4132: Vim9: wrong error message when autoload script can't be found

Problem:    Vim9: wrong error message when autoload script can't be found.
Solution:   Correct check for using autoload with wrong name.
diff --git a/src/testdir/test_vim9_import.vim b/src/testdir/test_vim9_import.vim
index 1353015..79c1ca4 100644
--- a/src/testdir/test_vim9_import.vim
+++ b/src/testdir/test_vim9_import.vim
@@ -1433,9 +1433,21 @@
 
   lines =<< trim END
       vim9script
-      import autoload 'doesNotExist.vim'
+      import autoload './doesNotExist.vim'
   END
   CheckScriptFailure(lines, 'E1264:')
+
+  lines =<< trim END
+      vim9script
+      import autoload '/dir/doesNotExist.vim'
+  END
+  CheckScriptFailure(lines, 'E1264:')
+
+  lines =<< trim END
+      vim9script
+      import autoload 'doesNotExist.vim'
+  END
+  CheckScriptFailure(lines, 'E1053: Could not import "doesNotExist.vim"')
 enddef
 
 " test disassembling an auto-loaded function starting with "debug"
diff --git a/src/version.c b/src/version.c
index 64a6077..8b9958a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4132,
+/**/
     4131,
 /**/
     4130,
diff --git a/src/vim9script.c b/src/vim9script.c
index 2038c78..41df6bf 100644
--- a/src/vim9script.c
+++ b/src/vim9script.c
@@ -411,7 +411,7 @@
     int		ret = FAIL;
     char_u	*as_name = NULL;
     typval_T	tv;
-    int		sid = -1;
+    int		sid = -2;
     int		res;
     long	start_lnum = SOURCING_LNUM;
     garray_T	*import_gap;
@@ -519,7 +519,7 @@
 
     if (res == FAIL || sid <= 0)
     {
-	semsg(_(is_autoload && sid <= 0
+	semsg(_(is_autoload && sid == -2
 		    ? e_autoload_import_cannot_use_absolute_or_relative_path
 		    : e_could_not_import_str), tv.vval.v_string);
 	goto erret;