Fix ZIP files in Windows not finding last path correctly.

src/emucore/FSNode.hxx

@@ -493,7 +493,7 @@ class AbstractFSNode
       const char* start = str.c_str();
       const char* cur = start + str.size() - 2;
 
-      while (cur >= start && *cur != FilesystemNode::PATH_SEPARATOR)
+      while (cur >= start && !(*cur == '/' || *cur == '\\'))
         --cur;
 
       return cur + 1;

src/gui/BrowserDialog.cxx

@@ -127,7 +127,6 @@ void BrowserDialog::show(const string& startpath,
 {
   const int fontWidth = _font.getMaxCharWidth(),
     fontHeight = _font.getFontHeight(),
-    HBORDER = fontWidth * 1.25,
     VGAP = fontHeight / 4;
 
   _mode = mode;