vendor: update buildkit to 2943a0838

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/sigs.k8s.io/structured-merge-diff/v4/value/scalar.go

@@ -0,0 +1,50 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package value
+
+// Compare compares floats. The result will be 0 if lhs==rhs, -1 if f <
+// rhs, and +1 if f > rhs.
+func FloatCompare(lhs, rhs float64) int {
+	if lhs > rhs {
+		return 1
+	} else if lhs < rhs {
+		return -1
+	}
+	return 0
+}
+
+// IntCompare compares integers. The result will be 0 if i==rhs, -1 if i <
+// rhs, and +1 if i > rhs.
+func IntCompare(lhs, rhs int64) int {
+	if lhs > rhs {
+		return 1
+	} else if lhs < rhs {
+		return -1
+	}
+	return 0
+}
+
+// Compare compares booleans. The result will be 0 if b==rhs, -1 if b <
+// rhs, and +1 if b > rhs.
+func BoolCompare(lhs, rhs bool) int {
+	if lhs == rhs {
+		return 0
+	} else if lhs == false {
+		return -1
+	}
+	return 1
+}