Added requested changes @ line ~558

Author: tshmieldev

source/Controlled.tsx

@@ -556,19 +556,17 @@ class ControlledBase extends React.Component<ControlledPropsWithDefaults, Contro
     const browserScale = window.visualViewport?.scale ?? 1
 
     if (!this.isScaling && browserScale <= 1 && this.touchYStart != null && e.changedTouches[0]) {
-      if (this.touchYStart != null && e.changedTouches[0]) {
-        this.touchYEnd = e.changedTouches[0].screenY
-
-        const max = Math.max(this.touchYStart, this.touchYEnd)
-        const min = Math.min(this.touchYStart, this.touchYEnd)
-        const delta = Math.abs(max - min)
-        const { swipeToUnzoomThreshold } = this.props
-
-        if (delta > swipeToUnzoomThreshold) {
-          this.touchYStart = undefined
-          this.touchYEnd = undefined
-          this.handleUnzoom()
-        }
+      this.touchYEnd = e.changedTouches[0].screenY
+
+      const max = Math.max(this.touchYStart, this.touchYEnd)
+      const min = Math.min(this.touchYStart, this.touchYEnd)
+      const delta = Math.abs(max - min)
+      const { swipeToUnzoomThreshold } = this.props
+
+      if (delta > swipeToUnzoomThreshold) {
+        this.touchYStart = undefined
+        this.touchYEnd = undefined
+        this.handleUnzoom()
       }
     }
   }