perl: allow empty lines and comments in perl-rdepends.txt

With this change the rdepends file can now have empty lines
and comment lines. The perl-rdepends.txt generation will be
fixed with further commits to leverage this change.

(From OE-Core rev: 2256afc652d69e720a31f7c5858d5ab32b0065f2)

Signed-off-by: Awais Belal <awais_belal@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/perl/perl_5.32.1.bb

@@ -320,6 +320,9 @@ python split_perl_packages () {
     # Read the pre-generated dependency file, and use it to set module dependecies
     for line in open(d.expand("${WORKDIR}") + '/perl-rdepends.txt').readlines():
         splitline = line.split()
+        # Filter empty lines and comments
+        if len(splitline) == 0 or splitline[0].startswith("#"):
+            continue
         if bb.data.inherits_class('native', d):
             module = splitline[0] + '-native'
             depends = "perl-native"