UBUNTU: [Packaging] Preserve the correct log file variable value

In successful builds, ensure that log variable remains set to the
correct value, such that further processing can be done on it for the
lrm builds.

Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>

debian/scripts/dkms-build

@@ -171,7 +171,10 @@ $fakeroot /usr/sbin/dkms build --no-prepare-kernel --no-clean-kernel \
 # Find the log and add it to our own.
 for log in "$dkms_dir/build/$dkms_package/$dkms_version/$abi_flavour"/*/"log/make.log" "$dkms_dir/build/$dkms_package/$dkms_version/build/make.log"
 do
-	[ -f "$log" ] && sed -e "s@$dkms_dir@<<DKMSDIR>>@g" <"$log"
+	if [ -f "$log" ]; then
+		sed -e "s@$dkms_dir@<<DKMSDIR>>@g" <"$log"
+		break
+	fi
 done
 
 # If this build failed then exit here.