File rdesktop-fix_pkgconfig_check.patch of Package rdesktop

--- a/configure.ac.orig	2019-09-20 10:03:48.000000000 +0300
+++ b/configure.ac	2019-11-11 16:59:53.567498044 +0300
@@ -45,15 +45,6 @@
 
 AC_CHECK_TOOL(STRIP, strip, :)
 
-dnl Don't depend on pkg-config
-m4_ifdef([PKG_CHECK_MODULES], [], [
-		m4_errprint([warning: pkg-config checks are not available])
-		m4_defun([PKG_CHECK_MODULES], [
-			AC_MSG_WARN([pkg-config not available, cannot check for $2])
-			$4
-		])
-])
-
 dnl Add option to build with using address sanitizer
 AC_ARG_ENABLE([address-sanitizer], AS_HELP_STRING([--enable-address-sanitizer], \
               [enable AddressSanitizer support for detecting a wide variety of \