FIX: gtk blitting

- Resize (rather than reserve) stl vector which will serve as our buffer. - use `front` rather than `[0]` to get the first element to get the pointer closes #8684
matplotlib · QuLogic · May 31, 2017 · May 31, 2017 · May 31, 2017 · 1a483485f04d162dc85a31c1a60d3e371417172a
commit 1a483485f04d162dc85a31c1a60d3e371417172a
diff --git a/src/_gtkagg.cpp b/src/_gtkagg.cpp
@@ -71,8 +71,8 @@ static PyObject *Py_agg_to_gtk_drawable(PyObject *self, PyObject *args, PyObject
        destwidth = (int)(rect.x2 - rect.x1);
        destheight = (int)(rect.y2 - rect.y1);
        deststride = destwidth * 4;
-        destbuffer.reserve(destheight * deststride);
-        destbufferptr = &destbuffer[0];
+        destbuffer.resize(destheight * deststride, 0);
+        destbufferptr = &destbuffer.front();

        agg::rendering_buffer destrbuf;
        destrbuf.attach(destbufferptr, destwidth, destheight, deststride);