Call uvwasi_init only once

source/m3_api_uvwasi.c

@@ -544,17 +544,17 @@ M3Result  m3_LinkWASI  (IM3Module module)
     init_options.preopenc = PREOPENS_COUNT;
     init_options.preopens = preopens;
 
-    uvwasi_errno_t ret = uvwasi_init(&uvwasi, &init_options);
-
-    if (ret != UVWASI_ESUCCESS) {
-        return "uvwasi_init failed";
-    }
-
     if (!wasi_context) {
         wasi_context = (m3_wasi_context_t*)malloc(sizeof(m3_wasi_context_t));
         wasi_context->exit_code = 0;
         wasi_context->argc = 0;
         wasi_context->argv = 0;
+
+        uvwasi_errno_t ret = uvwasi_init(&uvwasi, &init_options);
+
+        if (ret != UVWASI_ESUCCESS) {
+            return "uvwasi_init failed";
+        }
     }
 
     static const char* namespaces[2] = { "wasi_unstable", "wasi_snapshot_preview1" };

source/m3_parse.c

@@ -66,7 +66,7 @@ _           (ReadLEB_u32 (& numArgs, & i_bytes, i_end));
 #if defined(M3_COMPILER_MSVC)
             u8 argTypes[d_m3MaxSaneFunctionArgCount];
 #else
-            u8 argTypes[numArgs];
+            u8 argTypes[numArgs+1]; // make ubsan happy
 #endif
             for (u32 a = 0; a < numArgs; ++a)
             {