File fix-pangocairo_libs.patch of Package perl-Pango

From https://raw.githubusercontent.com/voidlinux/void-packages/087cebfbb367f0f20ab32a6b8cdd2653698240d7/srcpkgs/perl-Pango/patches/fix-pangocairo_libs.patch
Upstream: https://rt.cpan.org/Public/Bug/Display.html?id=111117
When constructing the $libs variable, there is a blank missing
before the -lpangocairo-1.0 coming from the pangocairo.pc through
pkg-config. Inserting an extra blank before the pkg-config
result fixes the issue.

--- Makefile.PL	2014-02-19 05:13:50.000000000 +0100
+++ Makefile.PL	2015-10-08 00:47:59.777157391 +0200
@@ -161,6 +161,7 @@
 if ($have_cairo) {
 	push @deps, qw/Cairo/;
 	$inc .= $pangocairo_pkgcfg{cflags};
+	$libs .= ' ';
 	$libs .= $pangocairo_pkgcfg{libs};
 }