[cairo] [PATCH cairo v2 6/8] scaled-font: Fix glyph and cluster count checks (CID #983386)

[Bryce Harrington]

num_glyphs and num_clusters are explicitly checked to be non-NULL at the
beginning of this routine, and by this point in the code both have been
deref'd multiple times, so checking them for NULL here again is
superfluous.

It looks like the intent here is to verify the glyphs and clusters
arrays are non-NULL unless their counts are zero, so change the tests
accordingly.

Coverity ID: #983386

Signed-off-by: Bryce Harrington <bryce at bryceharrington.org>
---
 src/cairo-scaled-font.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/cairo-scaled-font.c b/src/cairo-scaled-font.c
index f7a36c1..8dff57d 100644
--- a/src/cairo-scaled-font.c
+++ b/src/cairo-scaled-font.c
@@ -2052,7 +2052,7 @@ cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t   *scaled_font,
 		    status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT);
 		    goto DONE;
 		}
-		if (num_glyphs && *glyphs == NULL) {
+		if (*num_glyphs != 0 && *glyphs == NULL) {
 		    status = _cairo_error (CAIRO_STATUS_NULL_POINTER);
 		    goto DONE;
 		}
@@ -2062,7 +2062,7 @@ cairo_scaled_font_text_to_glyphs (cairo_scaled_font_t   *scaled_font,
 			status = _cairo_error (CAIRO_STATUS_NEGATIVE_COUNT);
 			goto DONE;
 		    }
-		    if (num_clusters && *clusters == NULL) {
+		    if (*num_clusters != 0 && *clusters == NULL) {
 			status = _cairo_error (CAIRO_STATUS_NULL_POINTER);
 			goto DONE;
 		    }
-- 
2.7.4