FS-7655: fix build issue w/ strict prototypes

src/include/switch_core_video.h

@@ -364,7 +364,7 @@ SWITCH_DECLARE(switch_image_t *) switch_img_write_text_img(int w, int h, switch_
 
 SWITCH_DECLARE(switch_image_t *) switch_img_read_file(const char* file_name);
 SWITCH_DECLARE(switch_status_t) switch_img_letterbox(switch_image_t *img, switch_image_t **imgP, int width, int height, const char *color);
-SWITCH_DECLARE(switch_bool_t) switch_core_has_video();
+SWITCH_DECLARE(switch_bool_t) switch_core_has_video(void);
 /** @} */
 
 SWITCH_END_EXTERN_C

src/switch_core_video.c

@@ -86,7 +86,7 @@ SWITCH_DECLARE(switch_img_position_t) parse_img_position(const char *name)
 	return r;
 }
 
-SWITCH_DECLARE(switch_bool_t) switch_core_has_video()
+SWITCH_DECLARE(switch_bool_t) switch_core_has_video(void)
 {
 #ifdef SWITCH_HAVE_VPX
 #ifdef SWITCH_HAVE_YUV