osl_areCommandArgsSet: ensure mutexes locked when accessing data.

Change-Id: I6b1f10e74aafc47e5618290d92087563c60e3c49

sal/osl/unx/process_impl.cxx

@@ -193,7 +193,10 @@ oslProcessError SAL_CALL osl_getCommandArg (sal_uInt32 nArg, rtl_uString ** strC
 
 int SAL_CALL osl_areCommandArgsSet (void)
 {
-    return (g_command_args.m_nCount > 0);
+    pthread_mutex_lock (&(g_command_args.m_mutex));
+    int nRet = (int) (g_command_args.m_nCount > 0);
+    pthread_mutex_unlock (&(g_command_args.m_mutex));
+    return nRet;
 }
 
 /***************************************

sal/osl/w32/process.cxx

@@ -376,7 +376,10 @@ oslProcessError SAL_CALL osl_getCommandArg( sal_uInt32 nArg, rtl_uString **strCo
 
 int SAL_CALL osl_areCommandArgsSet(void)
 {
-    return (g_command_args.m_nCount > 0);
+    osl_acquireMutex (*osl_getGlobalMutex());
+    int nRet = (int) (g_command_args.m_nCount > 0);
+    osl_releaseMutex (*osl_getGlobalMutex());
+    return nRet;
 }