Bug 1757393 - remove unused variable. r=yury

Differential Revision: https://phabricator.services.mozilla.com/D139832

js/src/wasm/WasmBuiltins.cpp

@@ -555,10 +555,8 @@ bool wasm::HandleThrow(JSContext* cx, WasmFrameIter& iter,
         rfe->framePointer = (uint8_t*)iter.frame();
         rfe->tlsData = iter.instance()->tlsData();
 
-        size_t offsetAdjustment = 0;
         rfe->stackPointer =
-            (uint8_t*)(rfe->framePointer -
+            (uint8_t*)(rfe->framePointer - tryNote->framePushed);
-                       (tryNote->framePushed + offsetAdjustment));
         rfe->target = iter.instance()->codeBase(tier) + tryNote->entryPoint;
 
         // Make sure to clear trapping state if we got here due to a trap.