pcbnew: bugfix for crashes when canvas is switched while dragging items (GAL).

pcbnew/tools/edit_tool.cpp

@@ -48,6 +48,12 @@ EDIT_TOOL::EDIT_TOOL() :
 }
 
 
+void EDIT_TOOL::Reset( RESET_REASON aReason )
+{
+    m_dragging = false;
+}
+
+
 bool EDIT_TOOL::Init()
 {
     // Find the selection tool, so they can cooperate

pcbnew/tools/edit_tool.h

@@ -50,7 +50,7 @@ public:
     EDIT_TOOL();
 
     /// @copydoc TOOL_INTERACTIVE::Reset()
-    void Reset( RESET_REASON aReason ) {};
+    void Reset( RESET_REASON aReason );
 
     /// @copydoc TOOL_INTERACTIVE::Init()
     bool Init();