vl: Make display_type a local variable

Now display_type is only used inside main(), and don't need to be a
global variable.

Signed-off-by: Eduardo Habkost <[email protected]>

Author: ehabkost

include/sysemu/sysemu.h

@@ -155,7 +155,6 @@ extern int vga_interface_type;
 extern int graphic_width;
 extern int graphic_height;
 extern int graphic_depth;
-extern DisplayType display_type;
 extern int display_opengl;
 extern const char *keyboard_layout;
 extern int win2k_install_hack;

vl.c

@@ -129,7 +129,6 @@ static const char *data_dir[16];
 static int data_dir_idx;
 const char *bios_name = NULL;
 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
-DisplayType display_type = DT_DEFAULT;
 int request_opengl = -1;
 int display_opengl;
 static int display_remote;
@@ -2963,6 +2962,7 @@ int main(int argc, char **argv, char **envp)
     bool defconfig = true;
     bool userconfig = true;
     bool nographic = false;
+    DisplayType display_type = DT_DEFAULT;
     const char *log_mask = NULL;
     const char *log_file = NULL;
     char *trace_file = NULL;