re-added fix for transparency groups

diff --git a/lib/pdf/GFXOutputDev.cc b/lib/pdf/GFXOutputDev.cc
index af891cb..84a4635 100644 (file)
--- a/lib/pdf/GFXOutputDev.cc
+++ b/lib/pdf/GFXOutputDev.cc
@@ -2696,6 +2696,9 @@ void GFXOutputDev::endTransparencyGroup(GfxState *state)
 
     dbg("endTransparencyGroup this->device now back to %08x (destroying %08x)", states[statepos].olddevice, this->device);
     
+    while(statepos && !states[statepos].olddevice)
+       --statepos;
+   
     this->device = states[statepos].olddevice;
     if(!this->device) {
        msg("<error> Invalid state nesting");