Remove extraneous whitespace from "blank" lines.

This patch was produced with the following (GNU) sed script:

	sed -i -r -e 's/^[ \t]+$//'

run on all *.[ch] files within cairo.

4 files changed, 6 insertions, 6 deletions

diff --git a/doc/tutorial/src/include/cairo-tutorial-gtk.h b/doc/tutorial/src/include/cairo-tutorial-gtk.h
index cdf96e20a..8a820f3db 100644
--- a/doc/tutorial/src/include/cairo-tutorial-gtk.h
+++ b/doc/tutorial/src/include/cairo-tutorial-gtk.h
@@ -128,6 +128,6 @@ main (int argc, char **argv)
     gtk_widget_show_all (window);
 
     gtk_main ();
-    
+
     return 0;
 }
diff --git a/doc/tutorial/src/include/cairo-tutorial-pdf.h b/doc/tutorial/src/include/cairo-tutorial-pdf.h
index ac2341dcd..c65b7e4a8 100644
--- a/doc/tutorial/src/include/cairo-tutorial-pdf.h
+++ b/doc/tutorial/src/include/cairo-tutorial-pdf.h
@@ -58,7 +58,7 @@ main (int argc, char **argv)
     }
 
     surface = cairo_pdf_surface_create (filename, WIDTH, HEIGHT);
-    
+
     cr = cairo_create (surface);
 
     draw (cr, WIDTH, HEIGHT);
diff --git a/doc/tutorial/src/include/cairo-tutorial-png.h b/doc/tutorial/src/include/cairo-tutorial-png.h
index a78551d5e..837dc370c 100644
--- a/doc/tutorial/src/include/cairo-tutorial-png.h
+++ b/doc/tutorial/src/include/cairo-tutorial-png.h
@@ -43,7 +43,7 @@ main (int argc, char **argv)
 
     surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
 					  WIDTH, HEIGHT);
-    
+
     cr = cairo_create (surface);
 
     draw (cr, WIDTH, HEIGHT);
diff --git a/doc/tutorial/src/lca.c b/doc/tutorial/src/lca.c
index 9aa2c1303..0b131afaf 100644
--- a/doc/tutorial/src/lca.c
+++ b/doc/tutorial/src/lca.c
@@ -19,14 +19,14 @@ draw (cairo_t *cr, int width, int height)
     cairo_move_to (cr, 0, 0);
     cairo_line_to (cr, 0, 80);
     cairo_line_to (cr, 50, 80);
-	
+
     /* C */
     cairo_move_to (cr, 110 + 40 * cos (M_PI / 3), 40 + 40 * sin(M_PI / 3));
     cairo_arc (cr, 110, 40, 40, M_PI / 3, -M_PI / 3);
-	
+
     /* A */
     cairo_move_to (cr, 160, 80);
     cairo_curve_to (cr, 160, -30, 210, -30, 210, 80);
-	
+
     cairo_stroke (cr);
 }