Fix potential bug in histogram matching (#5249)

2019-04-03 19:41:36 +02:00
parent 5bddcb45da
commit 1b08ac44c4
1 changed files with 8 additions and 8 deletions
--- a/rtengine/histmatching.cc
+++ b/rtengine/histmatching.cc
@@ -179,7 +179,7 @@ void mappingToCurve(const std::vector<int> &mapping, std::vector<double> &curve)
            return (x - xa) / (xb - xa) * (yb - ya) + ya;
        };
    idx = -1;
-    for (size_t i = curve.size()-1; i > 0; i -= 2) {
+    for (ssize_t i = curve.size()-1; i > 0; i -= 2) {
        if (curve[i] <= 0.f) {
            idx = i+1;
            break;