v3 parser: corrected bug with inv_gamma2_pdf

git-svn-id: https://www.dynare.org/svn/dynare/dynare_v3@638 ac1d8469-bf42-47a9-8791-bf33cf982152

parser.src/dyn.l

@@ -213,9 +213,9 @@ forecast {BEGIN DYNARE1; return FORECAST;}
  <DYNARE2>gamma_pdf {return GAMMA_PDF;}
  <DYNARE2>beta_pdf {return BETA_PDF;}
  <DYNARE2>normal_pdf {return NORMAL_PDF;}
- <DYNARE2>inv_gamma_pdf {return INV_GAMMA_PDF;}
  <DYNARE2>inv_gamma1_pdf {return INV_GAMMA_PDF;}
- <DYNARE2>inv_gamma2_pdf {return INV_GAMMA_PDF;}
+ <DYNARE2>inv_gamma2_pdf {return INV_GAMMA2_PDF;}
+ <DYNARE2>inv_gamma_pdf {return INV_GAMMA_PDF;}
  <DYNARE2>uniform_pdf {return UNIFORM_PDF;}
  <DYNARE2>corr {return CORR;}