[gimp] meson: not discouraged anymore on Windows.

[Jehan <jehanp src gnome org>]

commit 2cfe18fcf7813cd95499f3292be5912dcd555304
Author: Jehan <jehan girinstud io>
Date:   Fri Apr 1 20:02:46 2022 +0200

    meson: not discouraged anymore on Windows.

 meson.build | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)
---
diff --git a/meson.build b/meson.build
index 54d1175019..bf42690ffe 100644
--- a/meson.build
+++ b/meson.build
@@ -1881,11 +1881,13 @@ if warnings.length() > 0
   endforeach
 endif
 
-warning('''
+if not platform_windows
+  warning('''
 
-        MESON BUILD IS STILL EXPERIMENTAL!
+          MESON BUILD IS STILL EXPERIMENTAL!
 
-        we encourage usage of meson if you want to test and
-        report bugs. Yet if you are a packager, DO NOT USE
-        meson until we fix all known issues and bugs.
-        ''')
+          we encourage usage of meson if you want to test and
+          report bugs. Yet if you are a packager, DO NOT USE
+          meson until we fix all known issues and bugs.
+          ''')
+endif