message: imgproc: fix unaligned memory access
  may cause crashes on ARM platform
diff: @@ -84,6 +84,7 @@ Ptr<BaseFilter> getLinearFilter(
  #ifndef CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY
  +typedef int CV_DECL_ALIGNED(1) unaligned_int;
  #define VEC_ALIGN CV_MALLOC_ALIGN
  int FilterEngine__start(FilterEngine& this_, const Size &_wholeSize, const Size &sz, const Point &ofs)
  @@ -1049,7 +1050,7 @@ struct SymmColumnVec_32s8u
  s0 = v_muladd(v_cvt_f32(v_load(src[k] + i) + v_load(src[-k] + i)), v_setall_f32(ky[k]), s0);
  v_int32x4 s32 = v_round(s0);
  v_int16x8 s16 = v_pack(s32, s32);
  - *(int*)(dst + i) = v_reinterpret_as_s32(v_pack_u(s16, s16)).get0();
  + *(unaligned_int*)(dst + i) = v_reinterpret_as_s32(v_pack_u(s16, s16)).get0();
  i += v_int32x4::nlanes;
  }
  }
  @@ -1104,7 +1105,7 @@ struct SymmColumnVec_32s8u
  s0 = v_muladd(v_cvt_f32(v_load(src[k] + i) - v_load(src[-k] + i)), v_setall_f32(ky[k]), s0);
  v_int32x4 s32 = v_round(s0);
  v_int16x8 s16 = v_pack(s32, s32);
  - *(int*)(dst + i) = v_reinterpret_as_s32(v_pack_u(s16, s16)).get0();
  + *(unaligned_int*)(dst + i) = v_reinterpret_as_s32(v_pack_u(s16, s16)).get0();
  i += v_int32x4::nlanes;
  }
  }
  @@ -2129,7 +2130,7 @@ struct FilterVec_8u
  s0 = v_muladd(v_cvt_f32(v_reinterpret_as_s32(v_load_expand_q(src[k] + i))), v_setall_f32(kf[k]), s0);
  v_int32x4 s32 = v_round(s0);
  v_int16x8 s16 = v_pack(s32, s32);
  - *(int*)(dst + i) = v_reinterpret_as_s32(v_pack_u(s16, s16)).get0();
  + *(unaligned_int*)(dst + i) = v_reinterpret_as_s32(v_pack_u(s16, s16)).get0();
  i += v_int32x4::nlanes;
  }
  return i;
  