Register allocation error shows useless wrong line information

[vbgl]

Compiling the following program (with jasminc 2024.07.2) produces the error message reproduced below. The φ-nodes listed in that message carry a dummy information that should not be displayed.

export fn main(reg u32 x) -> reg u32 {
  reg u32 y = x;
  if x <s 0 {
    y = -x;
  } else {
    y = x;
  }
  x += y;
  return x;
}

"…/bug_1026.jazz", line 3 (2) to line 7 (3):
compilation error:
register allocation: conflicting variables “x.157” and “y.208” must be merged due to:
  at line -1 (-1):
    y.208 = y.206; /* u32:φ */
  at line -1 (-1):
    y.208 = y.207; /* u32:φ */
  at "tests/fail/register_allocation/x86-64/bug_1026.jazz", line 4 (4-11):
    ( _1.201,  _2.202,  _3.203,  _4.204,  _5.205, y.206) =
      #NEG_32(x.157); /*  */
  at "tests/fail/register_allocation/x86-64/bug_1026.jazz", line 8 (2-9):
    ( _6.209,  _7.210,  _8.211,  _9.212,  _10.213, x.214) =
      #ADD_32(x.157, y.208); /*  */