Fix a regression issue that retraction is not correct when wipe is off

Fix #2697

src/libslic3r/Extruder.hpp

@@ -33,7 +33,7 @@ public:
     double retract(double length, double restart_extra);
     double unretract();
     double E() const { return m_share_extruder ? m_share_E : m_E; }
-    void   reset_E() { reset(); }
+    void   reset_E() { m_E = 0.; m_share_E = 0.; }
     double e_per_mm(double mm3_per_mm) const { return mm3_per_mm * m_e_per_mm3; }
     double e_per_mm3() const { return m_e_per_mm3; }
     // Used filament volume in mm^3.