Related: fdo#48601 FILEOPEN: Open Visio's file with bitmap's blocks

This fdo contains 2 files with which I had a different crash for each of them.
This patch fixes one of the 2 crashes.

Change-Id: Ic67cad4de4b66e913debe95efc04db3ae6fbf781

libvisio/libvisio-0.0.17-fdo48601_part1.patch

+--- misc/build/libvisio-0.0.17/src/lib/VSDXContentCollector.cpp	2012-06-16 13:41:40.583153038 +0200
++++ misc/libvisio-0.0.17/src/lib/VSDXContentCollector.cpp	2012-06-16 13:44:16.311155881 +0200
+@@ -1131,14 +1131,16 @@
+     if (x <= m_pageWidth && x >= 0)
+       points[x] = y;
+ 
+-    xmove = points.begin()->first;
+-    ymove = points.begin()->second;
+-    for (std::map<double, double>::iterator iter = points.begin(); iter != points.end(); ++iter)
+-    {
+-      if (iter->first != xmove || iter->second != ymove)
++    if (!points.empty()) {
++      xmove = points.begin()->first;
++      ymove = points.begin()->second;
++      for (std::map<double, double>::iterator iter = points.begin(); iter != points.end(); ++iter)
+       {
+-        xline = iter->first;
+-        yline = iter->second;
++        if (iter->first != xmove || iter->second != ymove)
++        {
++          xline = iter->first;
++          yline = iter->second;
++        }
+       }
+     }
+   }

libvisio/makefile.mk

@@ -59,6 +59,7 @@ TARFILE_MD5=90010e213dd25648e70f0cc12f8fed55
 
 PATCH_FILES=\
 	$(TARFILE_NAME)-fdo50988.patch \
+	$(TARFILE_NAME)-fdo48601_part1.patch \
 	$(TARFILE_NAME).patch
 
 BUILD_ACTION=dmake $(MFLAGS) $(CALLMACROS)