COMP: Resource leaks

CID 1081076 (#1 of 8): Resource leak (RESOURCE_LEAK)
All 8 leaks were similiar.
labelLine was not being removed for EXIT_FAILURE.

Change-Id: Idefc8cb9b9d6afaaa47424d2182f803961ba1d57
COMP: Resource leaks

CID 1081073 (#1 of 84): Resource leak (RESOURCE_LEAK)
All 4 leaks were similiar.
low, high and lowhigh were not being removed for EXIT_FAILURE.

Change-Id: I16985608942d6ac089719c7ba4135f34f2c7f3c1
COMP: Uninitialized scalar variable

CID 1103571 (#1 of 1): Uninitialized scalar variable (UNINIT)
11. uninit_use: Using uninitialized value "NW".

switch statement did not have a default:. Added default: that throws
exception with an informative message.

Change-Id: Ic176d180ebd518cfa2509b12c5f8af2140e6685b
COMP: Unbounded source buffer

CID 1103201 (#1 of 1): Unbounded source buffer (STRING_SIZE)
string_size: Passing string "argv[2]" of unknown size to "sprintf(char
*, char const *, ...)".

Replaced sprintf with ostringstream.

Change-Id: Id06d694ff36c025c248d7357cc78eef523bb719d
Merge topic 'Coverity_itkFEMLinearSystemWrapperItpack'

94c6e04 COMP: Uninitialized scalar variable
Merge topic 'Coverity_itkLabelObjectLineTest'

0a22342 COMP: Resource leaks
Merge topic 'Coverity_itkLabelObjectLineComparatorTest'

724266f COMP: Resource leaks
Merge topic 'Coverity_ScaleSpaceGenerator2DTest'

c25ff88 COMP: Unbounded source buffer