tdf#113225 - reset framebuffer count when resetting OpenGLContext

Otherwise we can fail to allocate a new one when we need it post reset.

http://crashreport.libreoffice.org/stats/crash_details/e4f26191-15d5-441a-868f-9ada21ef4424

Change-Id: Icc5ec6c51338e18a0a1bc890f56670e8fe9c73ea
Reviewed-on: https://gerrit.libreoffice.org/43508
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
(cherry picked from commit 856d734ee1665b6aa7304847c3a923af09066016)
Reviewed-on: https://gerrit.libreoffice.org/43551
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/vcl/source/opengl/OpenGLContext.cxx b/vcl/source/opengl/OpenGLContext.cxx
index fc12d88617ff..57216f9827a2 100644
--- a/vcl/source/opengl/OpenGLContext.cxx
+++ b/vcl/source/opengl/OpenGLContext.cxx
@@ -422,6 +422,7 @@ void OpenGLContext::reset()
             delete pFramebuffer;
             pFramebuffer = pPrevFramebuffer;
         }
+        mnFramebufferCount = 0;
         mpFirstFramebuffer = nullptr;
         mpLastFramebuffer = nullptr;
     }