[gnumeric] Fix recently introduced bug #675836

[Andreas J. Guelzow <guelzow src gnome org>]

commit a56c9da1c1b1c5b527953bd29e08658fd5dfde8c
Author: Andreas J Guelzow <aguelzow pyrshep ca>
Date:   Thu May 10 13:21:20 2012 -0600

    Fix recently introduced bug #675836
    
    2012-05-10  Andreas J. Guelzow <aguelzow pyrshep ca>
    
    	* openoffice-read.c (od_draw_text_frame_end): check for empty
    	text content

 plugins/openoffice/ChangeLog         |    5 +++++
 plugins/openoffice/openoffice-read.c |    3 ++-
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/plugins/openoffice/ChangeLog b/plugins/openoffice/ChangeLog
index ca33b77..1da999e 100644
--- a/plugins/openoffice/ChangeLog
+++ b/plugins/openoffice/ChangeLog
@@ -1,3 +1,8 @@
+2012-05-10  Andreas J. Guelzow <aguelzow pyrshep ca>
+
+	* openoffice-read.c (od_draw_text_frame_end): check for empty
+	text content
+
 2012-05-01  Andreas J. Guelzow <aguelzow pyrshep ca>
 
 	* openoffice-write.c (odf_attrs_as_string): handle font colour
diff --git a/plugins/openoffice/openoffice-read.c b/plugins/openoffice/openoffice-read.c
index 1946222..2c9e051 100644
--- a/plugins/openoffice/openoffice-read.c
+++ b/plugins/openoffice/openoffice-read.c
@@ -7122,7 +7122,8 @@ od_draw_text_frame_end (GsfXMLIn *xin, G_GNUC_UNUSED GsfXMLBlob *blob)
 	OOParseState *state = (OOParseState *)xin->user_state;
 	oo_text_p_t *ptr;
 
-	if (state->text_p_stack != NULL && (NULL != (ptr = state->text_p_stack->data)))
+	if (state->text_p_stack != NULL && (NULL != (ptr = state->text_p_stack->data)) 
+	    && ptr->gstr != NULL)
 		g_object_set (state->chart.so, "text", ptr->gstr->str, "markup", ptr->attrs, NULL);
 	od_draw_frame_end (xin, NULL);
 	odf_pop_text_p (state);