intel/fs: Fix an assert in load_scratch

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6405>
diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index b054217..765f127 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -4818,7 +4818,7 @@
       /* Read the vector */
       assert(nir_dest_num_components(instr->dest) == 1);
       assert(nir_dest_bit_size(instr->dest) <= 32);
-      assert(nir_intrinsic_align(instr) > 1);
+      assert(nir_intrinsic_align(instr) > 0);
       if (nir_dest_bit_size(instr->dest) >= 4 &&
           nir_intrinsic_align(instr) >= 4) {
          /* The offset for a DWORD scattered message is in dwords. */