[cppcheck-warning-fix][unititialized-variable]

This commit fixes following cppcheck-1.67 issues:
[/src/SMESH/SMESH_MeshEditor.cpp:5250]: (error) Uninitialized variable: i0
[/src/SMESH/SMESH_MeshEditor.cpp:5251]: (error) Uninitialized variable: i1d
[/src/SMESH/SMESH_MeshEditor.cpp:5256]: (error) Uninitialized variable: i1d
[/src/SMESH/SMESH_MeshEditor.cpp:5257]: (error) Uninitialized variable: i2
[/src/SMESH/SMESH_MeshEditor.cpp:5252]: (error) Uninitialized variable: i3d
[//src/SMESH/SMESH_MeshEditor.cpp:5258]: (error) Uninitialized variable: i3d
[/src/SMESH/SMESH_MeshEditor.cpp:5253]: (error) Uninitialized variable: i0t
[/src/SMESH/SMESH_MeshEditor.cpp:5259]: (error) Uninitialized variable: i2t
[/src/SMESH/SMESH_Pattern.cpp:939]: (error) Uninitialized variable: scale