2.1 Master build #51

Clicking on Minimize or Close buttons result in a crash with the following stack trace:

Stack: [0xb3678000,0xb36c9000], sp=0xb36c7b20, free space=13eb36c74b0k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x24be41]
V [libjvm.so+0x22a51e]
C [libmat.so+0x7da7]
C [libgdk-x11-2.0.so.0+0x5639a]
C [libglib-2.0.so.0+0x3b5e5] g_main_context_dispatch+0x1d5
C [libglib-2.0.so.0+0x3f2d8]
C [libglib-2.0.so.0+0x3f817] g_main_loop_run+0x187
C [libgtk-x11-2.0.so.0+0x1373d9] gtk_main+0xb9
C [libmat.so+0x78c8] Java_com_sun_glass_ui_gtk_GtkApplication__1runLoop+0x148
j com.sun.glass.ui.gtk.GtkApplication._runLoop([Ljava/lang/String;Lcom/sun/glas
s/ui/Launchable;)V+0
j com.sun.glass.ui.gtk.GtkApplication$1$1.run()V+98
j java.lang.Thread.run()V+11
v ~StubRoutines::call_stub
V [libjvm.so+0x219840]
V [libjvm.so+0x33f298]