Set -Wno-cast-function-type-strict

-Wcast-function-type-strict was added by default in a recent clang roll,
and it's causing problems in vk-wrappers-1-0.inc when casting from
PFN_vkVoidFunction.

Change-Id: I8a9c378daea4bdaabf2f2745baf42c78616b9be0
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/vulkan-cts/+/767731
Reviewed-by: Craig Stout <cstout@google.com>
diff --git a/fuchsia/build.sh b/fuchsia/build.sh
index 3bfbfbf..54ca3f8 100755
--- a/fuchsia/build.sh
+++ b/fuchsia/build.sh
@@ -20,7 +20,7 @@
 # This matches what Fuchsia's binaries are compiled with.
 c_cxx_flags="-fexperimental-relative-c++-abi-vtables"
 # TODO(fxbug.dev/97589): Remove when errors are fixed.
-c_cxx_flags="${c_cxx_flags} -Wno-unused-but-set-variable"
+c_cxx_flags="${c_cxx_flags} -Wno-unused-but-set-variable -Wno-cast-function-type-strict"
 if [[ $target_cpu == "arm64" ]]; then
 	extra_args="-DFUCHSIA_SYSTEM_PROCESSOR=aarch64 -DFUCHSIA_COMPILER_TARGET=aarch64-fuchsia -DDE_CPU=DE_CPU_ARM_64 -DDE_PTR_SIZE=8"
 else