fix memory leak in xloadcols()
reported by Avi Halachmi (:avih)" <avihpit@yahoo.com> patch slightly changed by me.
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							@@ -760,12 +760,12 @@ xloadcols(void)
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	static int loaded;
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	Color *cp;
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	dc.collen = MAX(LEN(colorname), 256);
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	dc.col = xmalloc(dc.collen * sizeof(Color));
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	if (loaded) {
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		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
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			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
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	} else {
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		dc.collen = MAX(LEN(colorname), 256);
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		dc.col = xmalloc(dc.collen * sizeof(Color));
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	}
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	for (i = 0; i < dc.collen; i++)
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