win32: Add a missing include
authorMatthias Clasen <mclasen@redhat.com>
Wed, 27 Mar 2019 22:47:56 +0000 (18:47 -0400)
committerMatthias Clasen <mclasen@redhat.com>
Wed, 27 Mar 2019 22:47:56 +0000 (18:47 -0400)
commit3600d129bf0d9a64697e123b358416e524e19005
tree71f041f3cb17621d544aaaf130178304394cf6bb
parent0d43d11387a938791b9a279eafdf083cfed4cfdd
win32: Add a missing include

We are using round() now, so include math.h.
gdk/win32/gdkdevice-win32.c