--- gcin-1.4.9/gtk-im/gtkimcontextgcin.c.old	2010-06-06 10:08:43.683564930 +0800
+++ gcin-1.4.9/gtk-im/gtkimcontextgcin.c	2010-06-06 10:08:58.386924874 +0800
@@ -433,7 +433,7 @@
 
   gboolean preedit_changed = FALSE;
   gboolean context_has_str = context_xim->pe_str && context_xim->pe_str[0];
-  char *tstr;
+  char *tstr = NULL;
   GCIN_PREEDIT_ATTR att[GCIN_PREEDIT_ATTR_MAX_N];
   int cursor_pos;