Fix memory leaks in lcms

third_party/lcms2-2.6/0004-memory-leak-Type_Curve_Read.patch

Index: third_party/lcms2-2.6/0004-memory-leak-Type_Curve_Read.patch
diff --git a/third_party/lcms2-2.6/0004-memory-leak-Type_Curve_Read.patch b/third_party/lcms2-2.6/0004-memory-leak-Type_Curve_Read.patch
new file mode 100644
index 0000000000000000000000000000000000000000..341a1c6b47cac9727669b6ebe5c618044456ee15
--- /dev/null
+++ b/third_party/lcms2-2.6/0004-memory-leak-Type_Curve_Read.patch
@@ -0,0 +1,28 @@
+diff --git a/third_party/lcms2-2.6/src/cmstypes.c b/third_party/lcms2-2.6/src/cmstypes.c
+index 06742b5..9fe5e2a 100644
+--- a/third_party/lcms2-2.6/src/cmstypes.c
++++ b/third_party/lcms2-2.6/src/cmstypes.c
+@@ -1112,7 +1112,10 @@ void *Type_Curve_Read(struct _cms_typehandler_struct* self, cmsIOHANDLER* io, cm
+                NewGamma = cmsBuildTabulatedToneCurve16(self ->ContextID, Count, NULL);
+                if (!NewGamma) return NULL;
+ 
+-               if (!_cmsReadUInt16Array(io, Count, NewGamma -> Table16)) return NULL;
++               if (!_cmsReadUInt16Array(io, Count, NewGamma -> Table16)) {
++                 cmsFreeToneCurve(NewGamma);
++                 return NULL;
++               }
+ 
+                *nItems = 1;
+                return NewGamma;
+@@ -2350,7 +2353,10 @@ cmsStage* ReadCLUT(struct _cms_typehandler_struct* self, cmsIOHANDLER* io, cmsUI
+ 
+         for (i=0; i < Data ->nEntries; i++) {
+ 
+-            if (io ->Read(io, &v, sizeof(cmsUInt8Number), 1) != 1) return NULL;
++            if (io ->Read(io, &v, sizeof(cmsUInt8Number), 1) != 1) {
++              cmsStageFree(CLUT);
++              return NULL;
++            }
+             Data ->Tab.T[i] = FROM_8_TO_16(v);
+         }
+