fix: use Q_GLOBAL_STATIC to initialize `effectcs` in slideeffect.cpp

[cheese]

REGISTER_EFFECTS(T) requires the QHash effects initialised first. But that's not guaranteed by C++ standard and the program may crash. Instead, use Q_GLOBAL_STATIC to initialise the QHash.

Log: use Q_GLOBAL_STATIC to initialize effectcs in slideeffect.cpp Signed-off-by: Robin Lee [email protected]

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TAG Bot

New tag: 5.9.17 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #163

[deepin-bot[bot]]

TAG Bot

New tag: 6.0.4 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #183

[deepin-bot[bot]]

TAG Bot

New tag: 6.0.5 DISTRIBUTION: unstable Suggest: synchronizing this PR through rebase #186

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