iwd build failing

https://build.alpinelinux.org/buildlogs//build-edge-riscv64/community/iwd/iwd-2.19-r0.log

src/p2putil.c: In function 'p2p_get_random_string':
src/p2putil.c:2641:37: error: initializer element is not constant
 2641 |         static const int set_size = strlen(CHARSET);
      |                                     ^~~~~~

from

https://git.kernel.org/pub/scm/network/wireless/iwd.git/tree/src/p2putil.c#n2641

fix:

-	static const int set_size = strlen(CHARSET);
+	const int set_size = strlen(CHARSET);