Minor refactoring in NetworkCurl (#1587) #1794

Job	Run time
PSV.Linux.20.04.gcc7.Cpplint	7m 38s
PSV.Linux.20.04.gcc7.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 4s
PSV.Linux.22.04.gcc11	8m 2s
PSV.Linux.22.04.gcc13	12m 32s
PSV.Linux.22.04.gcc11.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	2m 2s
PSV.Linux.22.04.gcc9.Tests.CodeCov	10m 28s
PSV.Linux.Android.20.04	5m 46s
PSV.Linux.20.04.clang	7m 33s
PSV.MacOS13.Xcode15.x86_64	5m 6s
PSV.iOS.MacOS14.Xcode15	6m 2s
PSV.iOS.MacOS13.Xcode14	12m 18s
PSV.iOS.MacOS13.Xcode16	5m 11s
PSV.iOS.MacOS13.Xcode15	11m 31s
PSV.Linux.22.04.gcc13.OLP_SDK_ENABLE_DEFAULT_CACHE=OFF	5m 29s
PSV.MacOS14.Xcode15	4m 28s
PSV.MacOS13.Xcode16	6m 15s
PSV.Commit.Checker	0s
PSV.Win.VC2019	9m 11s
	2h 1m 36s

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