optimization: get rid of QString::fromUtf16() usage, part 2

QString::fromUtf16() is slow - it does a BOM check and optionally byte
swapping, which is utterly irrelevant when converting internal data
structures which are raw utf16 in host byte order. so replace it with
QString::fromUnicode() where possible (which seems to be everywhere).

the reasoning is the same as in commit e0fda52f, so not getting further
reviews.

Reviewed-by: denis
Reviewed-by: joao

1 files changed, 2 insertions, 2 deletions

diff --git a/src/sql/drivers/db2/qsql_db2.cpp b/src/sql/drivers/db2/qsql_db2.cpp
index d5b3984..ea0b42e 100644
--- a/src/sql/drivers/db2/qsql_db2.cpp
+++ b/src/sql/drivers/db2/qsql_db2.cpp
@@ -109,7 +109,7 @@ public:
 
 static QString qFromTChar(SQLTCHAR* str)
 {
-    return QString::fromUtf16(str);
+    return QString((const QChar *)str);
 }
 
 // dangerous!! (but fast). Don't use in functions that
@@ -833,7 +833,7 @@ bool QDB2Result::exec()
                 break;
             case QVariant::String:
                 if (bindValueType(i) & QSql::Out)
-                    values[i] = QString::fromUtf16((ushort*)tmpStorage.takeFirst().constData());
+                    values[i] = QString((const QChar *)tmpStorage.takeFirst().constData());
                 break;
             default: {
                 values[i] = QString::fromAscii(tmpStorage.takeFirst().constData());