Spread module custom data to all threads, enable libc-builtin float print (#633)

core/iwasm/interpreter/wasm_mini_loader.c

@@ -4758,7 +4758,7 @@ wasm_loader_prepare_bytecode(WASMModule *module,
 #endif
 #if WASM_ENABLE_FAST_INTERP != 0
     uint8 *func_const_end, *func_const = NULL;
-    int16 operand_offset;
+    int16 operand_offset = 0;
     uint8 last_op = 0;
     bool disable_emit, preserve_local = false;
     float32 f32;