remove unnecessary mut for making exported memory

Author: WhaleKit

crates/tinywasm/src/instance.rs

@@ -189,7 +189,7 @@ impl ModuleInstance {
     }
 
     /// Get an exported memory by name
-    pub fn exported_memory<'a>(&self, store: &'a mut Store, name: &str) -> Result<MemoryRef<'a>> {
+    pub fn exported_memory<'a>(&self, store: &'a Store, name: &str) -> Result<MemoryRef<'a>> {
         let export = self.export_addr(name).ok_or_else(|| Error::Other(format!("Export not found: {name}")))?;
         let ExternVal::Memory(mem_addr) = export else {
             return Err(Error::Other(format!("Export is not a memory: {}", name)));