maint: clean up code around calls to current_liboctave_error_handler. Remove statements after call to handler that are no longer reachable. Place input validation first and immediately call handler if necessary. Change if/error_handler/else to if/error_handler and re-indent code. * Array-util.cc, Array.cc, CColVector.cc, CDiagMatrix.cc, CMatrix.cc, CNDArray.cc, CRowVector.cc, CSparse.cc, DiagArray2.cc, MArray.cc, PermMatrix.cc, Sparse.cc, Sparse.h, chMatrix.cc, chNDArray.cc, dColVector.cc, dDiagMatrix.cc, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc, fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc, fColVector.cc, fDiagMatrix.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc, idx-vector.cc, CmplxAEPBAL.cc, CmplxCHOL.cc, CmplxGEPBAL.cc, CmplxHESS.cc, CmplxLU.cc, CmplxQR.cc, CmplxSCHUR.cc, CmplxSVD.cc, DASPK.cc, EIG.cc, LSODE.cc, Quad.cc, SparseCmplxCHOL.cc, SparseCmplxLU.cc, SparseCmplxQR.cc, SparseQR.cc, SparsedbleCHOL.cc, SparsedbleLU.cc, base-lu.cc, bsxfun-defs.cc, dbleAEPBAL.cc, dbleCHOL.cc, dbleGEPBAL.cc, dbleHESS.cc, dbleLU.cc, dbleQR.cc, dbleSCHUR.cc, dbleSVD.cc, eigs-base.cc, fCmplxAEPBAL.cc, fCmplxCHOL.cc, fCmplxLU.cc, fCmplxQR.cc, fCmplxSCHUR.cc, fEIG.cc, floatAEPBAL.cc, floatCHOL.cc, floatGEPBAL.cc, floatHESS.cc, floatLU.cc, floatQR.cc, floatSCHUR.cc, floatSVD.cc, lo-specfun.cc, oct-fftw.cc, oct-rand.cc, oct-spparms.cc, sparse-base-chol.cc, sparse-dmsolve.cc, file-ops.cc, lo-sysdep.cc, mach-info.cc, oct-env.cc, oct-syscalls.cc, cmd-edit.cc, cmd-hist.cc, data-conv.cc, lo-ieee.cc, lo-regexp.cc, oct-base64.cc, oct-shlib.cc, pathsearch.cc, singleton-cleanup.cc, sparse-util.cc, unwind-prot.cc: Remove statements after call to handler that are no longer reachable. Place input validation first and immediately call handler if necessary. Change if/error_handler/else to if/error_handler and re-indent code.

--- a/liboctave/numeric/LSODE.cc	Fri Jan 22 13:45:21 2016 -0500
+++ b/liboctave/numeric/LSODE.cc	Sat Jan 23 13:52:03 2016 -0800
@@ -175,6 +175,7 @@
             }
           else
             {
+              // FIXME: Should this be a warning?
               (*current_liboctave_error_handler)
                 ("lsode: invalid value for maximum order");
               integration_error = true;
@@ -210,6 +211,7 @@
 
       if (x.numel () != xdot.numel ())
         {
+          // FIXME: Should this be a warning?
           (*current_liboctave_error_handler)
             ("lsode: inconsistent sizes for state and derivative vectors");
 
@@ -232,6 +234,7 @@
         itol = 2;
       else
         {
+          // FIXME: Should this be a warning?
           (*current_liboctave_error_handler)
             ("lsode: inconsistent sizes for state and absolute tolerance vectors");
 
@@ -304,8 +307,7 @@
     default:
       integration_error = true;
       (*current_liboctave_error_handler)
-        ("unrecognized value of istate (= %d) returned from lsode",
-         istate);
+        ("unrecognized value of istate (= %d) returned from lsode", istate);
       break;
     }