fix(itkPipeline): parameters parsing crash when no space in line

Fix a bug where a call to --help and printing of parameters for
a cli app would crash if a description or parameter line
did not contain any space.

Author: jadh4v

src/itkPipeline.cxx

@@ -207,7 +207,9 @@ ::exit(const CLI::Error &e) -> int
 #ifndef ITK_WASM_NO_FILESYSTEM_IO
           std::cout << rang::fg::reset;
 #endif
-          std::cout << line.substr(loc) << std::endl;
+          if (loc == std::string::npos) {
+            std::cout << line.substr(loc) << std::endl;
+          }
         }
       } else if(optionGroup) {
         if (line == "") {