www/unit-wasm: fix build issue with wasmtime 27.0.0

Bump PORTREVISION.

www/unit-wasm/Makefile

 PKGNAMESUFFIX=	-${UNIT_MODNAME}
+PORTREVISION=	2
 
 UNIT_MODNAME=	wasm
 

www/unit/Makefile

 PORTNAME=	unit
 PORTVERSION=	${UNIT_VERSION}
-PORTREVISION=	1
+PORTREVISION?=	1
 CATEGORIES=	www
 MASTER_SITES?=	https://unit.nginx.org/download/
 

www/unit/files/patch-src_wasm_nxt__rt__wasmtime.c

+--- src/wasm/nxt_rt_wasmtime.c.orig	2024-11-22 14:57:14.033949000 -0500
++++ src/wasm/nxt_rt_wasmtime.c	2024-11-22 14:56:05.796918000 -0500
+@@ -281,7 +281,9 @@
+     wasi_config_inherit_stderr(wasi_config);
+ 
+     for (dir = ctx->dirs; dir != NULL && *dir != NULL; dir++) {
+-        wasi_config_preopen_dir(wasi_config, *dir, *dir);
++        wasi_config_preopen_dir(wasi_config, *dir, *dir,
++                                 WASMTIME_WASI_DIR_PERMS_READ,
++                                 WASMTIME_WASI_FILE_PERMS_READ);
+     }
+ 
+     error = wasmtime_context_set_wasi(rt_ctx->ctx, wasi_config);