glsl: Initialize parcel_out_uniform_storage members.

Fix defects reported by Coverity Scan.

uninit_member: Non-static class member buffer_block_index is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member ubo_byte_offset is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member shader_type is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member next_sampler is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member next_bindless_sampler is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member next_image is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member next_bindless_image is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member next_subroutine is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member field_counter is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member current_var is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member explicit_location is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member record_array_count is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member record_next_sampler is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member record_next_image is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member record_next_bindless_sampler is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member record_next_bindless_image is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member targets is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member shader_samplers_used is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member shader_shadow_samplers is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member num_bindless_samplers is not initialized in this constructor nor in any functions that it calls. uninit_member: Non-static class member num_bindless_images is not initialized in this constructor nor in any functions that it calls.

Signed-off-by: Vinson Lee vlee@freedesktop.org