Subzero: Use a "known" version of clang-format.

crosstest/test_stacksave.c

Index: crosstest/test_stacksave.c
diff --git a/crosstest/test_stacksave.c b/crosstest/test_stacksave.c
index b0e9b5e2be9f943c314c511e79d1bfe8dea6b07a..665488049cce2ea4296f4aba36a05c118b645a3d 100644
--- a/crosstest/test_stacksave.c
+++ b/crosstest/test_stacksave.c
@@ -29,9 +29,7 @@ uint32_t test_basic_vla(uint32_t size, uint32_t start, uint32_t inc) {
   return (vla[start] << 2) + (vla[mid] << 1) + vla[size - 1];
 }
 
-static uint32_t __attribute__((noinline)) foo(uint32_t x) {
-  return x * x;
-}
+static uint32_t __attribute__((noinline)) foo(uint32_t x) { return x * x; }
 
 /* NOTE: This has 1 stacksave, because the vla is in a loop and should
  * be freed before the next iteration.