ui_cocoa: fix mouse input for cocoa

This brings back two lines of code that have been removed over time but
appear to be required in order for mouse input to work on macOS.

ui/drivers/ui_cocoa.m

@@ -139,6 +139,7 @@ - (void)sendEvent:(NSEvent *)event {
 #if defined(HAVE_COCOA_METAL)
             pos = [apple_platform.renderView convertPoint:[event locationInWindow] fromView:nil];
 #elif defined(HAVE_COCOA)
+            pos = [[CocoaView get] convertPoint:[event locationInWindow] fromView:nil];
 #endif
             apple->touches[0].screen_x = (int16_t)pos.x;
             apple->touches[0].screen_y = (int16_t)pos.y;
@@ -172,6 +173,7 @@ - (void)sendEvent:(NSEvent *)event {
            if (!apple || pos.y < 0)
                return;
            apple->mouse_buttons |= (1 << event.buttonNumber);
+           apple->touch_count = 1;
        }
            break;
       case NSEventTypeLeftMouseUp:
@@ -431,10 +433,10 @@ - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sende
 
 - (void)application:(NSApplication *)sender openFiles:(NSArray *)filenames
 {
-	if ((filenames.count == 1) && [filenames objectAtIndex:0])
+  if ((filenames.count == 1) && [filenames objectAtIndex:0])
    {
       struct retro_system_info *system = runloop_get_libretro_system_info();
-	  NSString *__core                 = [filenames objectAtIndex:0];
+    NSString *__core                 = [filenames objectAtIndex:0];
       const char *core_name            = system->library_name;
 
       if (core_name)
@@ -483,7 +485,7 @@ static void open_core_handler(ui_browser_window_state_t *state, bool result)
    path_set(RARCH_PATH_CORE, state->result);
    ui_companion_event_command(CMD_EVENT_LOAD_CORE);
 
-   if (info 
+   if (info
          && info->load_no_content
          && set_supports_no_game_enable)
    {
@@ -554,7 +556,7 @@ - (void)openDocument:(id)sender
 
     if (browser)
     {
-       ui_browser_window_state_t 
+       ui_browser_window_state_t
           browser_state                  = {{0}};
        bool result                       = false;
        settings_t *settings              = config_get_ptr();