Use _cairo_malloc instead of malloc

_cairo_malloc(0) always returns NULL, but has not been used
consistently.  This patch replaces many calls to malloc() with
_cairo_malloc().

Fixes:  fdo# 101547
CVE: CVE-2017-9814 Heap buffer overflow at cairo-truetype-subset.c:1299
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/cairo-quartz-surface.c b/src/cairo-quartz-surface.c
index e047b2280..65d03080a 100644
--- a/src/cairo-quartz-surface.c
+++ b/src/cairo-quartz-surface.c
@@ -826,7 +826,7 @@ _cairo_surface_to_cgimage (cairo_surface_t       *source,
 	}
     }
 
-    source_img = malloc (sizeof (quartz_source_image_t));
+    source_img = _cairo_malloc (sizeof (quartz_source_image_t));
     if (unlikely (source_img == NULL))
 	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
 
@@ -984,7 +984,7 @@ _cairo_quartz_cairo_repeating_surface_pattern_to_quartz (cairo_quartz_surface_t
     if (unlikely (status))
 	return status;
 
-    info = malloc (sizeof (SurfacePatternDrawInfo));
+    info = _cairo_malloc (sizeof (SurfacePatternDrawInfo));
     if (unlikely (!info))
 	return CAIRO_STATUS_NO_MEMORY;
 
@@ -2253,7 +2253,7 @@ _cairo_quartz_surface_create_internal (CGContextRef cgContext,
     quartz_ensure_symbols ();
 
     /* Init the base surface */
-    surface = malloc (sizeof (cairo_quartz_surface_t));
+    surface = _cairo_malloc (sizeof (cairo_quartz_surface_t));
     if (unlikely (surface == NULL))
 	return (cairo_quartz_surface_t*) _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));