[gimp] file-pdf-load: Fix possible uninitialised variable access

[Mukund Sivaraman <muks src gnome org>]

commit 7f0e71dbf2debb27b71d1f54106411382420f8e4
Author: Karthikeyan S <karthikdevel gmail com>
Date:   Wed Dec 7 17:57:28 2011 +0530

    file-pdf-load: Fix possible uninitialised variable access
    
    Print a message to the user if poppler returns n_pages = 0.
    Return to file open dialog.
    This way we prevent uninitialised variable access down the line.

 plug-ins/common/file-pdf-load.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/plug-ins/common/file-pdf-load.c b/plug-ins/common/file-pdf-load.c
index 00c78f5..4138e74 100644
--- a/plug-ins/common/file-pdf-load.c
+++ b/plug-ins/common/file-pdf-load.c
@@ -1101,6 +1101,13 @@ load_dialog (PopplerDocument  *doc,
   gtk_widget_show (selector);
 
   n_pages = poppler_document_get_n_pages (doc);
+
+  if (n_pages <= 0)
+  {
+    gimp_message (_("Error getting number of pages from the given pdf file\n"));
+    return FALSE;
+  }
+
   gimp_page_selector_set_n_pages (GIMP_PAGE_SELECTOR (selector), n_pages);
   gimp_page_selector_set_target (GIMP_PAGE_SELECTOR (selector),
                                  loadvals.target);