utils/genrandconfig: fix indentation

Commit 0f3115b2ca9fbdcf7a4e02aba45104f2d423fdb8 broke the indentation
(missing one space)

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

utils/genrandconfig

@@ -535,7 +535,7 @@ def fixup_config(sysinfo, configfile):
         if 'BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT=y\n' in configlines:
             return False
 
-   if 'BR2_PACKAGE_REFPOLICY=y\n' in configlines and \
+    if 'BR2_PACKAGE_REFPOLICY=y\n' in configlines and \
        'BR2_PACKAGE_REFPOLICY_CUSTOM_GIT=y\n' in configlines and \
        'BR2_PACKAGE_REFPOLICY_CUSTOM_REPO_URL=""\n' in configlines:
         configlines.remove('BR2_PACKAGE_REFPOLICY_CUSTOM_GIT=y\n')