[dwm] fix keysyms processing

diff -up a/config.mk b/config.mk
--- a/config.mk	2017-09-29 13:06:55.783472647 -0700
+++ b/config.mk	2017-09-29 13:00:20.246627033 -0700
@@ -27,7 +27,7 @@ LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS}
 # flags
 CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=2 -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
 #CFLAGS   = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
-CFLAGS   = -std=c99 -pedantic -Wall -Wno-deprecated-declarations -Os ${INCS} ${CPPFLAGS}
+CFLAGS   = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
 LDFLAGS  = -s ${LIBS}

 # Solaris
diff -up a/dwm.c b/dwm.c
--- a/dwm.c	2017-09-29 13:06:55.785472631 -0700
+++ b/dwm.c	2017-09-29 13:01:22.039135243 -0700
@@ -988,16 +988,18 @@ void
 keypress(XEvent *e)
 {
 	unsigned int i;
-	KeySym keysym;
+	KeySym *keysym;
 	XKeyEvent *ev;
+	int keysyms;

 	ev = &e->xkey;
-	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
+	keysym = XGetKeyboardMapping(dpy, (KeyCode)ev->keycode, 1, &keysyms);
 	for (i = 0; i < LENGTH(keys); i++)
-		if (keysym == keys[i].keysym
+		if (keysym[0] == keys[i].keysym
 		&& CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
 		&& keys[i].func)
 			keys[i].func(&(keys[i].arg));
+	XFree(keysym);
 }

 void