cam: options: Don't implement move semantics for OptionsParser::Options

The compiler creates a move constructor automatically when none is
supplied, and it does the right thing by default in this case. Using
std::move() inside the function prevents the compiler from doing
return value optimization and actually hinders performances. Using
std::move() in the caller is unnecessary, the move constructor is used
automatically by the compiler.

For all these reasons remove the tentative optimization that resulted in
worse performances and worse code.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/cam/main.cpp

@@ -33,7 +33,7 @@ static int parseOptions(int argc, char *argv[])
 	parser.addOption(OptHelp, "Display this help message", "help");
 	parser.addOption(OptList, "List all cameras", "list");
 
-	options = std::move(parser.parse(argc, argv));
+	options = parser.parse(argc, argv);
 	if (!options.valid())
 		return -EINVAL;