Fixed division by zero caused by uninitialized vid struct

engine/UniQuake/gl_uniquake.c

@@ -3,9 +3,6 @@
 #include "../Quake/quakedef.h"
 #include "../Quake/gl_model.h"
 
-viddef_t vid;	// global video state
-modestate_t modestate = MS_UNINIT;
-
 typedef struct unity_glcalls_s
 {
 	void *target;

engine/UniQuake/stub/stub_vidgl.c

@@ -2,6 +2,9 @@
 
 #include "quakedef.h"
 
+viddef_t vid;	// global video state
+modestate_t modestate = MS_UNINIT;
+
 int			gl_stencilbits = 0;
 qboolean	gl_texture_NPOT = false;
 qboolean	gl_glsl_gamma_able = false;
@@ -17,6 +20,14 @@ void VID_Init(void)
 {
 	Cvar_RegisterVariable(&vid_gamma);
 	Cvar_RegisterVariable(&vid_contrast);
+
+	memset(&vid, 0, sizeof(viddef_t));
+	vid.width = 1;
+	vid.height = 1;
+	vid.conwidth = 1;
+	vid.conheight = 1;
+	vid.maxwarpwidth = 320;
+	vid.maxwarpheight = 200;
 }
 
 void VID_Shutdown(void)