Bug 182402 [JFace] FontRegistry.defaultFontRecord() leaks a Font
FontRegistry.defaultFontRecord(), creates a Font, uses that Font's FontData to create a FontRecord (which creates a new Font with the FontData), but never disposes the original Font once the FontRecord has been created.
bundles/org.eclipse.jface/src/org/eclipse/jface/resource/FontRegistry.java
/**
     * FontRecord is a private helper class that holds onto a font
     * and can be used to generate its bold and italic version. 
     */
    private class FontRecord {
        Font baseFont;
        Font boldFont;
        Font italicFont;
        FontData[] baseData;
        /**
         * Create a new instance of the receiver based on the 
         * plain font and the data for it.
         * @param plainFont The base looked up font.
         * @param data The data used to look it up.
         */
        FontRecord(Font plainFont, FontData[] data) {
            baseFont = plainFont;
            baseData = data;
        }
        /**
         * Dispose any of the fonts created for this record.
         */
        void dispose() {
            baseFont.dispose();
            if (boldFont != null) {
				boldFont.dispose();
			}
            if (italicFont != null) {
				italicFont.dispose();
			}