fix(Content): use move operator correctly

src/content/content.cpp

@@ -107,9 +107,9 @@ void Content::setBody (const vector<char> &body) {
 	d->body = body;
 }
 
-void Content::setBody (const std::vector<char> &&body) {
+void Content::setBody (std::vector<char> &&body) {
 	L_D();
-	d->body = body;
+	d->body = move(body);
 }
 
 void Content::setBody (const string &body) {

src/content/content.h

@@ -50,7 +50,7 @@ public:
 	std::string getBodyAsString () const;
 
 	void setBody (const std::vector<char> &body);
-	void setBody (const std::vector<char> &&body);
+	void setBody (std::vector<char> &&body);
 	void setBody (const std::string &body);
 	void setBody (const void *buffer, size_t size);