Use string sharing when serializing file tags

On my machine, the on-disk build graph of a freshly resolved Qt Creator
super project goes down by 12% with this patch.

Change-Id: Ic86b4ba31769d7d4af407b24a0ee9845cf943a79
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/corelib/language/artifactproperties.cpp b/src/lib/corelib/language/artifactproperties.cpp
index 6b4bcd00f..eae9fb667 100644
--- a/src/lib/corelib/language/artifactproperties.cpp
+++ b/src/lib/corelib/language/artifactproperties.cpp
@@ -55,13 +55,13 @@ ArtifactProperties::ArtifactProperties()
 
 void ArtifactProperties::load(PersistentPool &pool)
 {
-    pool.stream() >> m_fileTagsFilter;
+    m_fileTagsFilter.load(pool);
     m_propertyMap = pool.idLoadS<PropertyMapInternal>();
 }
 
 void ArtifactProperties::store(PersistentPool &pool) const
 {
-    pool.stream() << m_fileTagsFilter;
+    m_fileTagsFilter.store(pool);
     pool.store(m_propertyMap);
 }