[scudo] Use variable instead of recomputing. (#106647)

In the get fragmentation functions, there is already a variable that
computes the
in use bytes, so use that instead of recomputing it.

Author: cferris1000

compiler-rt/lib/scudo/standalone/primary32.h

@@ -940,7 +940,7 @@ template <typename Config> class SizeClassAllocator32 {
 
     uptr Integral;
     uptr Fractional;
-    computePercentage(BlockSize * InUseBlocks, InUsePages * PageSize, &Integral,
+    computePercentage(BlockSize * InUseBlocks, InUseBytes, &Integral,
                       &Fractional);
     Str->append("  %02zu (%6zu): inuse/total blocks: %6zu/%6zu inuse/total "
                 "pages: %6zu/%6zu inuse bytes: %6zuK util: %3zu.%02zu%%\n",

compiler-rt/lib/scudo/standalone/primary64.h

@@ -1185,7 +1185,7 @@ template <typename Config> class SizeClassAllocator64 {
 
     uptr Integral;
     uptr Fractional;
-    computePercentage(BlockSize * InUseBlocks, InUsePages * PageSize, &Integral,
+    computePercentage(BlockSize * InUseBlocks, InUseBytes, &Integral,
                       &Fractional);
     Str->append("  %02zu (%6zu): inuse/total blocks: %6zu/%6zu inuse/total "
                 "pages: %6zu/%6zu inuse bytes: %6zuK util: %3zu.%02zu%%\n",