Fix automate linker variable

Use the correct variable to specify the cmocka library dependency on tests.

Previously, using the linker flags variable, the order of the cmocka
library expands in bad position.

Author: deiv

src/media/Makefile.am

@@ -32,6 +32,5 @@ test_unit_CFLAGS += -D__FAVOR_BSD -D_BSD_SOURCE -D_DEFAULT_SOURCE # Get BSDish d
 test_unit_CFLAGS += -DDRIFTNET_VERSION=\"$(VERSION)\"
 test_unit_CFLAGS += -DDRIFTNET_PROGNAME=\"$(PACKAGE)\"
 #test_unit_CFLAGS += -DNO_HTTP_DISPLAY -DNO_DISPLAY_WINDOW
-test_unit_LDFLAGS = -lcmocka
-test_unit_LDADD = libmedia.a ../common/libcommon.a
+test_unit_LDADD = libmedia.a ../common/libcommon.a -lcmocka
 endif