archive/Lookup: pass const pointer

src/input/plugins/ArchiveInputPlugin.cxx

@@ -25,30 +25,22 @@
 #include "../InputStream.hxx"
 #include "fs/Path.hxx"
 #include "Log.hxx"
-#include "util/ScopeExit.hxx"
-
-#include <string.h>
 
 InputStreamPtr
 OpenArchiveInputStream(Path path, Mutex &mutex)
 {
 	const ArchivePlugin *arplug;
 
-	char *pname = strdup(path.c_str());
-	AtScopeExit(pname) {
-		free(pname);
-	};
-
 	// archive_lookup will modify pname when true is returned
 	ArchiveLookupResult l;
 	try {
-		l = archive_lookup(pname);
+		l = archive_lookup(path.c_str());
 		if (l.archive.IsNull()) {
 			return nullptr;
 		}
 	} catch (...) {
 		LogFormat(LogLevel::DEBUG, std::current_exception(),
-			  "not an archive, lookup %s failed", pname);
+			  "not an archive, lookup %s failed", path.c_str());
 		return nullptr;
 	}