AnyAudioImporter: this std::string usage is also unnecessary.

Since a long time ago.

src/MagnumPlugins/AnyAudioImporter/AnyImporter.cpp

@@ -42,7 +42,7 @@ using namespace Containers::Literals;
 
 AnyImporter::AnyImporter(PluginManager::Manager<AbstractImporter>& manager): AbstractImporter{manager} {}
 
-AnyImporter::AnyImporter(PluginManager::AbstractManager& manager, const std::string& plugin): AbstractImporter{manager, plugin} {}
+AnyImporter::AnyImporter(PluginManager::AbstractManager& manager, const Containers::StringView& plugin): AbstractImporter{manager, plugin} {}
 
 AnyImporter::~AnyImporter() = default;
 

src/MagnumPlugins/AnyAudioImporter/AnyImporter.h

@@ -126,7 +126,7 @@ class MAGNUM_ANYAUDIOIMPORTER_EXPORT AnyImporter: public AbstractImporter {
         explicit AnyImporter(PluginManager::Manager<AbstractImporter>& manager);
 
         /** @brief Plugin manager constructor */
-        explicit AnyImporter(PluginManager::AbstractManager& manager, const std::string& plugin);
+        explicit AnyImporter(PluginManager::AbstractManager& manager, const Containers::StringView& plugin);
 
         ~AnyImporter();