Fix formatting issues introduced by a77d5f70 (#959)

src/cycleclock.h

@@ -86,7 +86,7 @@ inline BENCHMARK_ALWAYS_INLINE int64_t Now() {
   // This returns a time-base, which is not always precisely a cycle-count.
 #if defined(__powerpc64__) || defined(__ppc64__)
   int64_t tb;
-  asm volatile("mfspr %0, 268" : "=r" (tb));
+  asm volatile("mfspr %0, 268" : "=r"(tb));
   return tb;
 #else
   uint32_t tbl, tbu0, tbu1;