engine: client: fix r_showtextures

engine/client/ref_common.c

@@ -635,7 +635,7 @@ qboolean R_Init( void )
 	string refopt;
 
 	gl_vsync = Cvar_Get( "gl_vsync", "0", FCVAR_ARCHIVE,  "enable vertical syncronization" );
-	gl_showtextures = Cvar_Get( "gl_showtextures", "0", FCVAR_CHEAT, "show all uploaded textures" );
+	gl_showtextures = Cvar_Get( "r_showtextures", "0", FCVAR_CHEAT, "show all uploaded textures" );
 	r_adjust_fov = Cvar_Get( "r_adjust_fov", "1", FCVAR_ARCHIVE, "making FOV adjustment for wide-screens" );
 	r_decals = Cvar_Get( "r_decals", "4096", FCVAR_ARCHIVE, "sets the maximum number of decals" );
 	gl_wgl_msaa_samples = Cvar_Get( "gl_wgl_msaa_samples", "0", FCVAR_GLCONFIG, "samples number for multisample anti-aliasing" );