Core: Fix tests that did break because QProcess security fix

Amends 29fceed2ff

Pick-to: 5.15 6.2 6.3
Change-Id: Ief3317a89f7be1dd1dc249297bd16e958b9e1ef2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

tests/auto/corelib/kernel/qsharedmemory/tst_qsharedmemory.cpp

@@ -124,7 +124,7 @@ private:
 
 tst_QSharedMemory::tst_QSharedMemory()
     : existingSharedMemory(0)
-    , m_helperBinary("producerconsumer_helper")
+    , m_helperBinary("./producerconsumer_helper")
 {
 }
 

tests/auto/corelib/thread/qthreadstorage/tst_qthreadstorage.cpp

@@ -301,7 +301,7 @@ void tst_QThreadStorage::crashOnExit()
     QSKIP("No qprocess support", SkipAll);
 #else
     QString errorMessage;
-    QVERIFY2(runCrashOnExit("crashOnExit_helper", &errorMessage),
+    QVERIFY2(runCrashOnExit("./crashOnExit_helper", &errorMessage),
              qPrintable(errorMessage));
 #endif
 }