compilation fix.

Author: IRainman

include/fast_float/bigint.h

@@ -618,20 +618,16 @@ struct bigint : pow5_tables<> {
       exp -= small_step;
     }
     if (exp != 0) {
-      FASTFLOAT_TRY(small_mul(
-          vec,
-          limb(
 #if defined(__clang__)
-              // Work around clang bug https://godbolt.org/z/zedh7rrhc
-              // This is similar to
-              // https://github.com/llvm/llvm-project/issues/47746, except
-              // the workaround described there don't work here
-              (static_cast<void>(small_power_of_5[0]), small_power_of_5[exp])
+      // Work around clang bug https://godbolt.org/z/zedh7rrhc
+      // This is similar to
+      // https://github.com/llvm/llvm-project/issues/47746, except
+      // the workaround described there don't work here
+      FASTFLOAT_TRY(small_mul(vec, limb((static_cast<void>(small_power_of_5[0]),
+                                         small_power_of_5[exp]))));
 #else
-              small_power_of_5[exp]
+      FASTFLOAT_TRY(small_mul(vec, limb(small_power_of_5[exp])));
 #endif
-
-                  )));
     }
 
     return true;