Fix display of iterator stack by .gdbinit command "pitx".

src/.gdbinit (pitx): Fix incorrect references to fields of the
 iterator stack.

src/.gdbinit

@@ -254,8 +254,8 @@ define pitx
   while ($i < $it->sp && $i < 4)
     set $e = $it->stack[$i]
     printf "stack[%d]: ", $i
-    pitmethod $e->method
-    printf "[%d]", $e->position.charpos
+    pitmethod $e.method
+    printf "[%d]", $e.position.charpos
     printf "\n"
     set $i = $i + 1
   end

src/ChangeLog

@@ -1,3 +1,8 @@
+2012-02-18  Eli Zaretskii  <eliz@gnu.org>
+
+	* .gdbinit (pitx): Fix incorrect references to fields of the
+	iterator stack.
+
 2012-02-17  Chong Yidong  <cyd@gnu.org>
 
 	* syntax.c (Fscan_lists): Doc fix (Bug#10833).