Bug 1587905 - Remove useless variable 'bytesAllocated' declaration & assignation r=sfink

Differential Revision: https://phabricator.services.mozilla.com/D48888

--HG--
extra : moz-landing-system : lando

js/xpconnect/src/XPCJSRuntime.cpp

@@ -2901,10 +2901,9 @@ static nsresult ReadSourceFromFilename(JSContext* cx, const char* filename,
     ptr += bytesRead;
   }
 
-  size_t bytesAllocated;
   if (utf8Source) {
     // |buf| is already UTF-8, so we can directly return it.
-    *len = bytesAllocated = rawLen;
+    *len = rawLen;
     *utf8Source = buf.release();
   } else {
     MOZ_ASSERT(twoByteSource != nullptr);
@@ -2920,8 +2919,6 @@ static nsresult ReadSourceFromFilename(JSContext* cx, const char* filename,
     if (!*twoByteSource) {
       return NS_ERROR_FAILURE;
     }
-
-    bytesAllocated = *len * sizeof(char16_t);
   }
 
   return NS_OK;
@@ -3023,7 +3020,7 @@ js::UniquePtr<EdgeRange> ReflectorNode::edges(JSContext* cx,
   // to guard against uninitialized objects.
   nsISupports* supp = UnwrapDOMObjectToISupports(&get());
   if (supp) {
-    JS::AutoSuppressGCAnalysis nogc; // bug 1582326
+    JS::AutoSuppressGCAnalysis nogc;  // bug 1582326
 
     nsINode* node;
     // UnwrapDOMObjectToISupports can only return non-null if its argument is
@@ -3284,7 +3281,7 @@ JSObject* XPCJSRuntime::GetUAWidgetScope(JSContext* cx,
     RefPtr<BasePrincipal> key = BasePrincipal::Cast(principal);
     if (Principal2JSObjectMap::Ptr p = mUAWidgetScopeMap.lookup(key)) {
       scope = p->value();
-      break; // Need ~RefPtr to run, and potentially GC, before returning.
+      break;  // Need ~RefPtr to run, and potentially GC, before returning.
     }
 
     SandboxOptions options;
@@ -3298,12 +3295,12 @@ JSObject* XPCJSRuntime::GetUAWidgetScope(JSContext* cx,
     nsTArray<nsCOMPtr<nsIPrincipal>> principalAsArray(1);
     principalAsArray.AppendElement(principal);
     RefPtr<ExpandedPrincipal> ep = ExpandedPrincipal::Create(
-      principalAsArray, principal->OriginAttributesRef());
+        principalAsArray, principal->OriginAttributesRef());
 
     // Create the sandbox.
     RootedValue v(cx);
     nsresult rv = CreateSandboxObject(
-      cx, &v, static_cast<nsIExpandedPrincipal*>(ep), options);
+        cx, &v, static_cast<nsIExpandedPrincipal*>(ep), options);
     NS_ENSURE_SUCCESS(rv, nullptr);
     scope = &v.toObject();