package: add missing empty line after header

Occurrences were searched using [1]:
check-package --include-only PackageHeader $(find * -type f)
and manually fixed to comply to [2].

[1] http://patchwork.ozlabs.org/patch/729669/
[2] http://nightly.buildroot.org/#writing-rules-mk

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/grantlee/grantlee.mk

@@ -3,6 +3,7 @@
 # grantlee
 #
 ################################################################################
+
 GRANTLEE_VERSION = 5.1.0
 GRANTLEE_SITE = http://downloads.grantlee.org
 GRANTLEE_INSTALL_STAGING = YES

package/lesstif/lesstif.mk

@@ -3,6 +3,7 @@
 # lesstif
 #
 ################################################################################
+
 LESSTIF_VERSION = 0.95.2
 LESSTIF_SOURCE = lesstif-$(LESSTIF_VERSION).tar.bz2
 LESSTIF_SITE = http://downloads.sourceforge.net/project/lesstif/lesstif/$(LESSTIF_VERSION)