gst1-libav: update to 1.18.4

Signed-off-by: W. Michael Petullo <mike@flyn.org>

multimedia/gst1-libav/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gst1-libav
-PKG_VERSION:=1.18.1
-PKG_RELEASE:=1
+PKG_VERSION:=1.18.4
+PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=gst-libav-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://gstreamer.freedesktop.org/src/gst-libav
-PKG_HASH:=39a717bc2613efbbba19df3cf5cacff0987471fc8281ba2c5dcdeaded79c2ed8
+PKG_HASH:=344a463badca216c2cef6ee36f9510c190862bdee48dc4591c0a430df7e8c396
 PKG_BUILD_DIR:=$(BUILD_DIR)/gst-libav-$(PKG_VERSION)
 
 PKG_MAINTAINER:=W. Michael Petullo <mike@flyn.org> \