another cast for clan

kernel/arm64/trmm_utcopy_sve_v1.c

@@ -121,11 +121,11 @@ int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, BLASLONG posX, BLASLON
         posY += n_active;
         js += n_active;
 #ifdef DOUBLE
-        pn = svwhilelt_b64(js, n);
+        pn = svwhilelt_b64((uint64_t)js, (uint64_t)n);
         n_active = svcntp_b64(svptrue_b64(), pn);
     } while (svptest_any(svptrue_b64(), pn));
 #else
-        pn = svwhilelt_b32(js, n);
+        pn = svwhilelt_b32((uint64_t)js, (uint64_t)n);
         n_active = svcntp_b32(svptrue_b32(), pn);
     } while (svptest_any(svptrue_b32(), pn));
 #endif