Fix memory leak in QuadTreeIndex #2263

Job	Run time
PSV.Commit.Checker	7s
PSV.Linux.22.04.clang.Tests	14m 22s
PSV.Linux.22.04.gcc11.Tests	15m 13s
PSV.Linux.latest.gcc14.Tests	17m 12s
PSV.MacOS15.Xcode16.ARM64	5m 6s
PSV.Linux.24.04.gcc13.Tests	13m 4s
PSV.Linux.Android.22.04	38m 19s
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	3m 59s
PSV.iOS.MacOS15.Xcode16.ARM64	8m 39s
PSV.Win.VC2022	11m 16s
PSV.iOS.MacOS14.Xcode15.ARM64	7m 51s
PSV.Linux.22.04.gcc9.Tests.CodeCov	11m 5s
PSV.Linux.latest.gcc14.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	6m 32s
PSV.Clang.Format.Checker	31s
PSV.Linux.22.04.gcc9.Cpplint	8s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	3m 1s
PSV.iOS.MacOS15.Xcode26.ARM64	7m 37s
PSV.Linux.Android.22.04	7m 24s
PSV.Linux.22.04.gcc9.Cpplint	8s
PSV.iOS.MacOS15.Xcode26.ARM64	7m 37s
PSV.Linux.22.04.gcc11.Tests	15m 13s
PSV.Clang.Format.Checker	31s
PSV.Linux.24.04.gcc13.Tests	13m 4s
PSV.Linux.22.04.gcc9.Tests.CodeCov	11m 5s
PSV.Linux.latest.gcc14.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	6m 32s
PSV.Commit.Checker	7s
PSV.MacOS15.Xcode16.ARM64	5m 6s
PSV.Win.VC2022	11m 16s
PSV.Linux.22.04.gcc9.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	3m 59s
PSV.Linux.22.04.clang.Tests	14m 22s
PSV.Linux.latest.gcc14.Tests	17m 12s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	3m 1s
PSV.iOS.MacOS14.Xcode15.ARM64	7m 51s
PSV.iOS.MacOS15.Xcode16.ARM64	8m 39s
	4h 57m 9s

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