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.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/gradient-alpha.c b/test/gradient-alpha.c
index 3015728b..6ae06aac 100644
--- a/test/gradient-alpha.c
+++ b/test/gradient-alpha.c
@@ -50,7 +50,7 @@ draw (cairo_t *cr, int width, int height)
     cairo_paint (cr);
 
     cairo_pattern_destroy (gradient);
-    
+
     return CAIRO_TEST_SUCCESS;
 }