Fix some issues raised by latest cppcheck

- coordinateoperation_internal.hpp: missing 'explicit' keyword
- proj.cpp: unused 'generic' member in enumeration
- init.cpp: useless assignment to a_orig and es_orig, because done again a
            few lines below.
- crs.cpp: unused variable
- datum.cpp: inefficient use of find() function
- io.cpp:
  * missing 'static' qualifier for method
  * useles ternary test (left and right have same value)
- aeqd.cpp: useless assignment of inv and fwd, snice done again a few lines
            below
- isea.cpp: useless assignment of resolution and aperture since done again a
            few lines below, and with default values when params are absent
- mod_ster.cpp: useless assignment of lp.lam, overriden in below code paths.
- stere.cpp: false positive, but better not modify another variable than the
             iterator in a for() loop.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/iso19111/io.cpp b/src/iso19111/io.cpp
index d5f38fd5..7c2eb625 100644
--- a/src/iso19111/io.cpp
+++ b/src/iso19111/io.cpp
@@ -1186,7 +1186,7 @@ struct WKTParser::Private {
     buildPrimeMeridian(const WKTNodeNNPtr &node,
                        const UnitOfMeasure &defaultAngularUnit);
 
-    optional<std::string> getAnchor(const WKTNodeNNPtr &node);
+    static optional<std::string> getAnchor(const WKTNodeNNPtr &node);
 
     static void parseDynamic(const WKTNodeNNPtr &dynamicNode,
                              double &frameReferenceEpoch,
@@ -6545,9 +6545,9 @@ PROJStringParser::Private::processAxisSwap(Step &step,
                                ? AxisDirection::NORTH
                                : (axisType == AxisType::NORTH_POLE)
                                      ? AxisDirection::SOUTH
-                                     : (axisType == AxisType::SOUTH_POLE)
-                                           ? AxisDirection::NORTH
-                                           : AxisDirection::NORTH;
+                                     /*: (axisType == AxisType::SOUTH_POLE)
+                                           ? AxisDirection::NORTH*/
+                                     : AxisDirection::NORTH;
     CoordinateSystemAxisNNPtr north = createAxis(
         northName, northAbbev, northDir, unit,
         (!isGeographic && axisType == AxisType::NORTH_POLE)