playlist/cue/parser: pass StringView to Feed()

test/fuzzer/FuzzCueParser.cxx

@@ -1,8 +1,6 @@
 #include "playlist/cue/CueParser.hxx"
 #include "util/IterableSplitString.hxx"
-
-#include <string>
-#include <string_view>
+#include "util/StringView.hxx"
 
 extern "C" {
 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
@@ -15,7 +13,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 	const std::string_view src{(const char *)data, size};
 
 	for (const auto line : IterableSplitString(src, '\n')) {
-		parser.Feed(std::string(line).c_str());
+		parser.Feed(line);
 		parser.Get();
 	}