Fix warnings/issues reported in Windows and by CodeQL/Coverity (#3275)

Fix the warnings and issues reported:
- in Windows platform
- by CodeQL static code analyzing
- by Coverity static code analyzing

And update CodeQL script to build exception handling and memory features.

core/iwasm/libraries/debug-engine/handler.c

@@ -309,9 +309,11 @@ handle_general_query(WASMGDBServer *server, char *payload)
     }
 
     if (!strcmp(name, "WasmData")) {
+        write_packet(server, "");
     }
 
     if (!strcmp(name, "WasmMem")) {
+        write_packet(server, "");
     }
 
     if (!strcmp(name, "Symbol")) {
@@ -447,7 +449,7 @@ send_thread_stop_status(WASMGDBServer *server, uint32 status, korp_tid tid)
                             "thread-pcs:%" PRIx64 ";00:%s;reason:%s;", pc,
                             pc_string, "trace");
         }
-        else if (status > 0) {
+        else { /* status > 0 (== 0 is checked at the function beginning) */
             len += snprintf(tmpbuf + len, MAX_PACKET_SIZE - len,
                             "thread-pcs:%" PRIx64 ";00:%s;reason:%s;", pc,
                             pc_string, "signal");

core/iwasm/libraries/lib-pthread/lib_pthread_wrapper.c

@@ -1123,7 +1123,8 @@ posix_memalign_wrapper(wasm_exec_env_t exec_env, void **memptr, int32 align,
     wasm_module_inst_t module_inst = get_module_inst(exec_env);
     void *p = NULL;
 
-    *((int32 *)memptr) = module_malloc(size, (void **)&p);
+    /* TODO: for memory 64, module_malloc may return uint64 offset */
+    *((uint32 *)memptr) = (uint32)module_malloc(size, (void **)&p);
     if (!p)
         return -1;
 

core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/blocking_op.h

@@ -3,6 +3,9 @@
  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  */
 
+#ifndef _BLOCKING_OP_H_
+#define _BLOCKING_OP_H_
+
 #include "bh_platform.h"
 #include "wasm_export.h"
 
@@ -57,3 +60,5 @@ __wasi_errno_t
 blocking_op_poll(wasm_exec_env_t exec_env, struct pollfd *pfds, nfds_t nfds,
                  int timeout, int *retp);
 #endif
+
+#endif /* end of _BLOCKING_OP_H_ */