Fix some cppcheck reports

[core/winnt/src/TWinNTSystem.cxx:996]: (error) Invalid number of character '(' when these macros are defined: 'ROOTPREFIX'.
[html/src/TDocDirective.cxx:316]: (error) Invalid number of character '{' when these macros are defined: 'R__BEPAEPSTLICHERALSDERPAPST'.
[math/mathcore/src/Delaunay2D.cxx:30]: (error) Invalid number of character '{' when these macros are defined: 'HAS_CGAL'.

[graf2d/qt/src/TGQt.cxx:2817]: (error) Array 'shape[15]' accessed at index 15, which is out of bounds.
[graf2d/qt/src/TGQt.cxx:2818]: (error) Array 'shape[15]' accessed at index 16, which is out of bounds.
[graf2d/qt/src/TGQt.cxx:2841]: (error) Array 'shape[15]' accessed at index 15, which is out of bounds.
[net/http/civetweb/handle_form.inl:627]: (style) Array index 'd' is used before limits check.

[roofit/roostats/src/MetropolisHastings.cxx:153]: (style) Condition 'i<1000' is always true

[graf2d/qt/src/TQtClientGuard.cxx:289]: (warning) Assert statement modifies 'thisPix'.

[roofit/roofitcore/src/BidirMMapPipe.cxx:906]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.
[roofit/roofitcore/src/BidirMMapPipe.cxx:972]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.
[roofit/roofitcore/src/BidirMMapPipe.cxx:1394]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.
[roofit/roofitcore/src/BidirMMapPipe.cxx:1429]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.

[graf3d/eve/src/TEveElement.cxx:1745]: (style) Exception should be caught by reference.
[roofit/histfactory/src/hist2workspace.cxx:76]: (style) Exception should be caught by reference.
[roofit/histfactory/src/hist2workspace.cxx:97]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooClassFactory.cxx:786]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:413]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:484]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:526]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:568]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:588]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:629]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:642]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:681]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:859]: (style) Exception should be caught by reference.
[tmva/tmva/src/CostComplexityPruneTool.cxx:131]: (style) Exception should be caught by reference.
[tmva/tmva/src/CostComplexityPruneTool.cxx:142]: (style) Exception should be caught by reference.
[tmva/tmva/src/DataSet.cxx:173]: (style) Exception should be caught by reference.
[tmva/tmva/src/Reader.cxx:636]: (style) Exception should be caught by reference.
[tmva/tmva/src/Reader.cxx:702]: (style) Exception should be caught by reference.
[tmva/tmva/src/VariableGaussTransform.cxx:751]: (style) Exception should be caught by reference.

[io/sql/src/TSQLStructure.cxx:1931] -> [io/sql/src/TSQLStructure.cxx:1933]: (warning) Identical condition 'len==0', second condition is always false