merge to tip for backout

modules/lcms/src/cmsmtrx.c

@@ -584,7 +584,7 @@ LCMSBOOL MAT3solve(LPVEC3 x, LPMAT3 a, LPVEC3 b)
 
 	CopyMemory(&m, a, sizeof(MAT3));
 
-	if (MAT3inverse(&m, &a_1) < 0) return FALSE;  // Singular matrix
+	if (!MAT3inverse(&m, &a_1)) return FALSE;  // Singular matrix
 
 	MAT3eval(x, &a_1, b);
 	return TRUE;

modules/lcms/src/cmswtpnt.c

@@ -126,8 +126,6 @@ LCMSBOOL LCMSEXPORT cmsBuildRGB2XYZtransferMatrix(LPMAT3 r, LPcmsCIExyY WhitePt,
 
         xn = WhitePt -> x;
         yn = WhitePt -> y;
-        if (yn == 0.0)
-           return FALSE;
         xr = Primrs -> Red.x;
         yr = Primrs -> Red.y;
         xg = Primrs -> Green.x;
@@ -143,7 +141,7 @@ LCMSBOOL LCMSEXPORT cmsBuildRGB2XYZtransferMatrix(LPMAT3 r, LPcmsCIExyY WhitePt,
 
 
         // Result = Primaries ^ (-1) inverse matrix
-        if (MAT3inverse(&Primaries, &Result) < 0)
+        if (!MAT3inverse(&Primaries, &Result))
                         return FALSE;