mimetypes/: port to qsizetype

Fixes compiler warnings about narrowing conversions.

Found by compiling with clang and -Wshorten-64-to-32.

Drive-by changes:
- use range-for instead of an iterator based loop
- use strlen("*.") instead of magic number 2

Pick-to: 6.5
Task-number: QTBUG-102461
Change-Id: I0bf2299049c0411ed496468238ca30b69946ffc2
Reviewed-by: David Faure <david.faure@kdab.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp b/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp
index 34c159e074..6bb3bcb1cf 100644
--- a/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp
+++ b/tests/auto/corelib/mimetypes/qmimedatabase/tst_qmimedatabase.cpp
@@ -810,7 +810,7 @@ void tst_QMimeDatabase::findByFileName_data()
     QByteArray line(1024, Qt::Uninitialized);
 
     while (!f.atEnd()) {
-        int len = f.readLine(line.data(), 1023);
+        const qint64 len = f.readLine(line.data(), 1023);
 
         if (len <= 2 || line.at(0) == '#')
             continue;