Fixed spurious keypress at startup on BeOS

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40340

src/video/bwindow/SDL_sysevents.cc

@@ -288,9 +288,12 @@ void BE_InitOSKeymap(_THIS)
 {
 	unsigned int i;
 
-	/* Initialize all the key states as "up" */
+	/* Initialize the keyboard state */
 	key_flip = 0;
-	memset(keyinfo[key_flip].key_states, 0, 16);
+	get_key_info(&keyinfo[key_flip]);
+	memcpy(keyinfo[!key_flip].key_states,
+	       keyinfo[key_flip].key_states,
+	       SDL_TABLESIZE(keyinfo[key_flip].key_states));
 
 	/* Initialize the BeOS key translation table */
 	/* Source: <be/interface/InterfaceDefs.h> and BeOS keyboard info */