frame.h (FRAME_LINE_TO_PIXEL_Y): Add missing parenthesis.

src/ChangeLog

+2010-04-08  YAMAMOTO Mitsuharu  <mituharu@math.s.chiba-u.ac.jp>
+
+	* frame.h (FRAME_LINE_TO_PIXEL_Y): Add missing parenthesis.
+
 2010-04-07  Jan Djärv  <jan.h.d@swipnet.se>
 
 	* frame.h (FRAME_TEXT_LINES_TO_PIXEL_HEIGHT): Don't use

src/frame.h

@@ -980,7 +980,7 @@ extern Lisp_Object selected_frame;
    at ROW/COL.  */
 
 #define FRAME_LINE_TO_PIXEL_Y(f, row) \
-  ((row < FRAME_TOP_MARGIN (f) ? 0 : FRAME_INTERNAL_BORDER_WIDTH (f))	\
+  (((row) < FRAME_TOP_MARGIN (f) ? 0 : FRAME_INTERNAL_BORDER_WIDTH (f))	\
    + (row) * FRAME_LINE_HEIGHT (f))
 
 #define FRAME_COL_TO_PIXEL_X(f, col) \