gst1-libav: update to 1.15.2

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

multimedia/gst1-libav/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gst1-libav
-PKG_VERSION:=1.14.4
+PKG_VERSION:=1.15.2
 PKG_RELEASE:=1
 
 PKG_MAINTAINER:=W. Michael Petullo <mike@flyn.org> \
@@ -16,7 +16,7 @@ PKG_MAINTAINER:=W. Michael Petullo <mike@flyn.org> \
 
 PKG_SOURCE:=gst-libav-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://gstreamer.freedesktop.org/src/gst-libav
-PKG_HASH:=dfd78591901df7853eab7e56a86c34a1b03635da0d3d56b89aa577f1897865da
+PKG_HASH:=96241130cb0067e01925a7cfe084dcf05941f139eb1ab45e5556c3f95120ce49
 
 PKG_LICENSE:=GPL-2.0 LGPL-2.0
 PKG_LICENSE_FILES:=COPYING COPYING.LIB
@@ -184,7 +184,7 @@ CONFIGURE_ARGS += \
 	--disable-inline-asm \
 	--disable-yasm"
 
-TARGET_CFLAGS += -D_GNU_SOURCE
+TARGET_CFLAGS += -D_GNU_SOURCE -Wno-format-nonliteral
 
 TARGET_LDFLAGS += $(FPIC)