Initial font size issue.

Hi,

When I specify a font by point size (I'm using "Inconsolata:size=12"),
characters that are substituted from another font because they are not in the
main one appear too small.  Doing a zoom reset fixes it.  For example:

Before: http://i.imgur.com/G4Mfv4X.png
After:  http://i.imgur.com/PMDhfQA.png

I found that adding the pixel size (acquired from the initial font load) to the
pattern then reloading the font fixes the problem.  I'm not sure if this is a
proper fix, though.

st.c

@@ -3472,6 +3472,9 @@ xloadfonts(char *fontstr, double fontsize)
 	if (usedfontsize < 0) {
 		FcPatternGetDouble(dc.font.match->pattern,
 		                   FC_PIXEL_SIZE, 0, &fontval);
+		FcPatternAddDouble(pattern, FC_PIXEL_SIZE, fontval);
+		if (xloadfont(&dc.font, pattern))
+			die("st: can't open font %s\n", fontstr);
 		usedfontsize = fontval;
 		if (fontsize == 0)
 			defaultfontsize = fontval;