Qt: fill NULL-deref in jumping forward

Close #5446

diff --git a/modules/gui/qt4/input_manager.cpp b/modules/gui/qt4/input_manager.cpp
index 1b4bb1b48e1a21804bef465752108635b96e6585..fc8aa00feb69c24347c4d40ba2a3a16583409069 100644 (file)
--- a/modules/gui/qt4/input_manager.cpp
+++ b/modules/gui/qt4/input_manager.cpp
@@ -882,7 +882,7 @@ void InputManager::setRate( int new_rate )
 void InputManager::jumpFwd()
 {
     int i_interval = var_InheritInteger( p_input, "short-jump-size" );
-    if( i_interval > 0 )
+    if( i_interval > 0 && hasInput() )
     {
         mtime_t val = CLOCK_FREQ * i_interval;
         var_SetTime( p_input, "time-offset", val );
@@ -892,7 +892,7 @@ void InputManager::jumpFwd()
 void InputManager::jumpBwd()
 {
     int i_interval = var_InheritInteger( p_input, "short-jump-size" );
-    if( i_interval > 0 )
+    if( i_interval > 0 && hasInput() )
     {
         mtime_t val = -CLOCK_FREQ * i_interval;
         var_SetTime( p_input, "time-offset", val );