build: fix --asan to build lib/libopus dependency

build.sh

@@ -170,6 +170,8 @@ if [ "$USE_ASAN" -eq 1 ]; then
     AF="-fsanitize=address -fno-omit-frame-pointer -g -Og"
     AL="-fsanitize=address"
     (cd lib && make clean $JOBS $MAKE_ARGS 2>&1 && make "CFLAGS+=$AF" "LDFLAGS+=$AL" $JOBS $MAKE_ARGS 2>&1) || { echo "lib build failed"; exit 1; }
+    # libopus собирается без ASAN (собственный CFLAGS в Makefile, .a несовместим с PIE)
+    (cd lib/libopus && make clean $JOBS $MAKE_ARGS 2>&1 && make $JOBS $MAKE_ARGS 2>&1) || { echo "libopus build failed"; exit 1; }
     (cd src && make clean $JOBS $MAKE_ARGS 2>&1 && make "CFLAGS+=$AF" "LDFLAGS+=$AL" $JOBS $MAKE_ARGS 2>&1) || { echo "src build failed"; exit 1; }
     BUILD_SUCCESS=1
 elif [ "$USE_HARDENED" -eq 1 ]; then