deactivate this module rtp requires also to disable openssl

diff --git a/src/modules/meson.build b/src/modules/meson.build
index 3636ce0..d9d50b3 100644
--- a/src/modules/meson.build
+++ b/src/modules/meson.build
@@ -1,4 +1,4 @@
-if host_machine.system() != 'windows'
+if host_machine.system() != 'windows' and cc.sizeof('void *') >= 8
   subdir('rtp')
 endif
 
@@ -68,7 +68,7 @@ if host_machine.system() == 'windows'
   ]
 endif
 
-if host_machine.system() != 'windows'
+if host_machine.system() != 'windows' and cc.sizeof('void *') >= 8
   all_modules += [
     [ 'module-rtp-recv', 'rtp/module-rtp-recv.c', [], [], [libatomic_ops_dep], librtp ],
     [ 'module-rtp-send', 'rtp/module-rtp-send.c' , [], [], [], librtp ],