[PATCH:libX11] Clean up memory when first XCreateRegion succeeds and second fails

[Alan Coopersmith]

Error: Memory leak (CWE 401)
   Memory leak of pointer 's' allocated with XCreateRegion()
        at line 387 of /export/alanc/X.Org/sx86-gcc/lib/libX11/src/Region.c in function 'XShrinkRegion'.
          's' allocated at line 387 with XCreateRegion().
          s leaks when s != 0 at line 387.
Error: Memory leak (CWE 401)
   Memory leak of pointer 'tra' allocated with XCreateRegion()
        at line 1452 of /export/alanc/X.Org/sx86-gcc/lib/libX11/src/Region.c in function 'XXorRegion'.
          'tra' allocated at line 1451 with XCreateRegion().
          tra leaks when tra != 0 at line 1451.

[ This bug was found by the Parfait 0.3.6 bug checking tool.
  For more information see http://labs.oracle.com/projects/parfait/ ]

Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
---
 src/Region.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/Region.c b/src/Region.c
index 45a0bda..41047b2 100644
--- a/src/Region.c
+++ b/src/Region.c
@@ -384,7 +384,12 @@ XShrinkRegion(
     int grow;
 
     if (!dx && !dy) return 0;
-    if ((! (s = XCreateRegion()))  || (! (t = XCreateRegion()))) return 0;
+    if (! (s = XCreateRegion()) )
+	return 0;
+    if (! (t = XCreateRegion()) ) {
+	XDestroyRegion(s);
+	return 0;
+    }
     if ((grow = (dx < 0))) dx = -dx;
     if (dx) Compress(r, s, t, (unsigned) 2*dx, TRUE, grow);
     if ((grow = (dy < 0))) dy = -dy;
@@ -1448,8 +1453,12 @@ XXorRegion(Region sra, Region srb, Region dr)
 {
     Region tra, trb;
 
-    if ((! (tra = XCreateRegion())) || (! (trb = XCreateRegion())))
+    if (! (tra = XCreateRegion()) )
 	return 0;
+    if (! (trb = XCreateRegion()) ) {
+	XDestroyRegion(tra);
+	return 0;
+    }
     (void) XSubtractRegion(sra,srb,tra);
     (void) XSubtractRegion(srb,sra,trb);
     (void) XUnionRegion(tra,trb,dr);
-- 
1.7.3.2