Initialize 'info' to NULL to avoid use of potentially uninitialized
value at the cleanup label when an earlier error causes a goto before
png_create_info_struct() is reached.
screenshot.cpp:808:9: warning: variable 'info' is used uninitialized whenever 'if'
condition is true [-Wsometimes-uninitialized]
screenshot.cpp:814:9: warning: variable 'info' is used uninitialized whenever 'if'
condition is true [-Wsometimes-uninitialized]
Fixes: eda55c7c2f ("vulkan/screenshot-layer: Add Vulkan screenshot layer")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Casey Bowman <casey.g.bowman@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41325>
4c46cd8e9d