fix POP_MEM_OFFSET of MEMORY64

Signed-off-by: wenlingyun1 <[email protected]>

Author: WenLY1

core/iwasm/interpreter/wasm_interp_classic.c

@@ -590,7 +590,7 @@ wasm_interp_get_frame_ref(WASMInterpFrame *frame)
 #endif
 
 #if WASM_ENABLE_MEMORY64 != 0
-#define POP_MEM_OFFSET() (is_memory64 ? POP_I64() : POP_I32())
+#define POP_MEM_OFFSET() (is_memory64 ? POP_I64() : (uint32)POP_I32())
 #else
 #define POP_MEM_OFFSET() POP_I32()
 #endif