media-video/ffmpeg: set symbol/object thingy

Fixes

  /var/tmp/portage/media-video/ffmpeg-4.3/work/ffmpeg-4.3/configure: line 5719: nm: command not found

as seen in bug 728566.

Bug: https://bugs.gentoo.org/728566
Package-Manager: Portage-2.3.101, Repoman-2.3.22
Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

media-video/ffmpeg/ffmpeg-4.3.ebuild

@@ -470,6 +470,7 @@ multilib_src_configure() {
 		--cc="$(tc-getCC)" \
 		--cxx="$(tc-getCXX)" \
 		--ar="$(tc-getAR)" \
+		--nm="$(tc-getNM)" \
 		--ranlib="$(tc-getRANLIB)" \
 		--optflags="${CFLAGS}" \
 		$(use_enable static-libs static) \

media-video/ffmpeg/ffmpeg-9999.ebuild

@@ -470,6 +470,7 @@ multilib_src_configure() {
 		--cc="$(tc-getCC)" \
 		--cxx="$(tc-getCXX)" \
 		--ar="$(tc-getAR)" \
+		--nm="$(tc-getNM)" \
 		--ranlib="$(tc-getRANLIB)" \
 		--optflags="${CFLAGS}" \
 		$(use_enable static-libs static) \