Fix build errors when building without SDL

src/dummy/i_video.c

@@ -57,6 +57,8 @@ const char *VID_GetModeName(INT32 modenum)
 	return NULL;
 }
 
+UINT32 I_GetRefreshRate(void) { return 35; }
+
 void I_UpdateNoBlit(void){}
 
 void I_FinishUpdate(void){}

src/hardware/Sourcefile

@@ -8,6 +8,5 @@ hw_cache.c
 hw_md2load.c
 hw_md3load.c
 hw_model.c
-u_list.c
 hw_batching.c
 r_opengl/r_opengl.c

src/hardware/hw_model.c

@@ -15,7 +15,7 @@
 #include "hw_md2load.h"
 #include "hw_md3load.h"
 #include "hw_md2.h"
-#include "u_list.h"
+#include "../u_list.h"
 #include <string.h>
 
 static float PI = (3.1415926535897932384626433832795f);

src/u_list.c

@@ -8,7 +8,7 @@
 */
 
 #include "u_list.h"
-#include "../z_zone.h"
+#include "z_zone.h"
 
 // Utility for managing
 // structures in a linked