committing changes in /etc made by "-bash"

Package changes:

kernel/postinst.d/dkms

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # We're passed the version of the kernel being installed
 inst_kern=$1
@@ -11,17 +11,16 @@ _get_kernel_dir() {
        Linux)          DIR="/lib/modules/$KVER/build" ;;
        GNU/kFreeBSD)   DIR="/usr/src/kfreebsd-headers-$KVER/sys" ;;
     esac
-    echo $DIR
+    echo "$DIR"
 }
 
 _check_kernel_dir() {
-    DIR=$(_get_kernel_dir $1)
+    DIR=$(_get_kernel_dir "$1")
     case ${uname_s} in
-       Linux)          test -e $DIR/include ;;
-       GNU/kFreeBSD)   test -e $DIR/kern && test -e $DIR/conf/kmod.mk ;;
-       *)              return 1 ;;
+       Linux)          test -e "$DIR/include" ;;
+       GNU/kFreeBSD)   test -e "$DIR/kern" && test -e "$DIR/conf/kmod.mk" ;;
+       *)              false ;;
     esac
-    return $?
 }
 
 case "${uname_s}" in
@@ -36,10 +35,10 @@ case "${uname_s}" in
 esac
 
 if [ -x /usr/lib/dkms/dkms_autoinstaller ]; then
-    exec /usr/lib/dkms/dkms_autoinstaller start $inst_kern
+    exec /usr/lib/dkms/dkms_autoinstaller start "$inst_kern"
 fi
 
-if ! _check_kernel_dir $inst_kern ; then
+if ! _check_kernel_dir "$inst_kern" ; then
     echo "dkms: WARNING: $kernel headers are missing, which may explain the above failures." >&2
     echo "      please install the $header_pkg package to fix this." >&2
 fi