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
return (FontRecord) result;
		}
        result = stringToFontData.get(symbolicName);
        FontRecord fontRecord;
        if (result == null) {
			fontRecord = defaultFontRecord();
		} else {
			fontRecord = createFont(symbolicName, (FontData[]) result);
		}
        if (fontRecord == null) {
			fontRecord = defaultFontRecord();
		}
        stringToFontRecord.put(symbolicName, fontRecord);
        return fontRecord;
    }
    /* (non-Javadoc)
     * @see org.eclipse.jface.resource.ResourceRegistry#getKeySet()
     */
    public Set getKeySet() {
        return Collections.unmodifiableSet(stringToFontData.keySet());
    }
    /* (non-Javadoc)
     * @see org.eclipse.jface.resource.ResourceRegistry#hasValueFor(java.lang.String)
     */
    public boolean hasValueFor(String fontKey) {
        return stringToFontData.containsKey(fontKey);
    }
    /* (non-Javadoc)
     * @see org.eclipse.jface.resource.ResourceRegistry#clearCaches()
     */