xia: style fixes for whitespace
xia: style fixes for spaces after curly braces

This patch complies with patch:
  - 0979ae66464bd9793c6701861bccb21f9f118a52
    checkpatch: Add --strict messages for blank lines around braces
xia: style fixes for spaces around operators

This patch complies with patch:
  - 847316231c2f89918a2872e3d5fa3f5de11c39b6
    checkpatch: report missing spaces around trigraphs with --strict