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/compilation/aot_compiler.c

@@ -330,7 +330,7 @@ aot_gen_commit_values(AOTCompFrame *frame)
         if (!p->dirty)
             continue;
 
-        n = p - frame->lp;
+        n = (uint32)(p - frame->lp);
 
         /* Commit reference flag */
         if (comp_ctx->enable_gc) {
@@ -432,7 +432,7 @@ aot_gen_commit_values(AOTCompFrame *frame)
             continue;
 
         p->dirty = 0;
-        n = p - frame->lp;
+        n = (uint32)(p - frame->lp);
 
         /* Commit values */
         switch (p->type) {
@@ -538,7 +538,7 @@ aot_gen_commit_values(AOTCompFrame *frame)
         /* Clear reference flags for unused stack slots.  */
         for (p = frame->sp; p < end; p++) {
             bh_assert(!p->ref);
-            n = p - frame->lp;
+            n = (uint32)(p - frame->lp);
 
             /* Commit reference flag.  */
             if (p->ref != p->committed_ref - 1) {
@@ -621,7 +621,7 @@ aot_gen_commit_sp_ip(AOTCompFrame *frame, bool commit_sp, bool commit_ip)
     }
 
     if (commit_sp) {
-        n = sp - frame->lp;
+        n = (uint32)(sp - frame->lp);
         value = I32_CONST(offset_of_local(comp_ctx, n));
         if (!value) {
             aot_set_last_error("llvm build const failed");

core/iwasm/compilation/aot_emit_control.c

@@ -1269,6 +1269,7 @@ aot_compile_op_br_table(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
                         PUSH(values[j], target_block->result_types[j]);
                     }
                     wasm_runtime_free(values);
+                    values = NULL;
                 }
                 target_block->is_reachable = true;
                 if (i == br_count)
@@ -1294,6 +1295,7 @@ aot_compile_op_br_table(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
                         PUSH(values[j], target_block->param_types[j]);
                     }
                     wasm_runtime_free(values);
+                    values = NULL;
                 }
                 if (i == br_count)
                     default_llvm_block = target_block->llvm_entry_block;

core/iwasm/compilation/aot_llvm.c

@@ -674,7 +674,8 @@ aot_add_llvm_func(AOTCompContext *comp_ctx, LLVMModuleRef module,
     uint32 backend_thread_num, compile_thread_num;
 
     /* Check function parameter types and result types */
-    for (i = 0; i < aot_func_type->param_count + aot_func_type->result_count;
+    for (i = 0;
+         i < (uint32)(aot_func_type->param_count + aot_func_type->result_count);
          i++) {
         if (!check_wasm_type(comp_ctx, aot_func_type->types[i]))
             return NULL;