Move assert to static_assert

ClangTidy pointed this out.

Change-Id: I59f34bb58a0336fe30fe5f4ce6e118a1b47bbb87
Reviewed-on: https://skia-review.googlesource.com/c/skcms/+/823734
Auto-Submit: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>

skcms.cc

diff --git a/skcms.cc b/skcms.cc
index 576c4f8..e2565b3 100644
--- a/skcms.cc
+++ b/skcms.cc
@@ -1237,7 +1237,7 @@
 bool skcms_ParseWithA2BPriority(const void* buf, size_t len,
                                 const int priority[], const int priorities,
                                 skcms_ICCProfile* profile) {
-    assert(SAFE_SIZEOF(header_Layout) == 132);
+    static_assert(SAFE_SIZEOF(header_Layout) == 132, "need to update header code");
 
     if (!profile) {
         return false;