Fix a compil warning and 2 Coverity warnings.

common/build_version.cpp

@@ -151,6 +151,7 @@ wxString GetVersionInfoData( const wxString& aTitle, bool aHtml, bool aBrief )
 #if defined( NGSPICE_BUILD_VERSION )
     aMsg << indent4 << "ngspice: " << NGSPICE_BUILD_VERSION << eol;
 #elif defined( NGSPICE_HAVE_CONFIG_H )
+    #undef HAVE_STRNCASECMP     /* is redefined in ngspice/config.h */
     #include <ngspice/config.h>
     aMsg << indent4 << "ngspice: " << PACKAGE_VERSION << eol;
 #else

pcb_calculator/transline/rectwaveguide.cpp

@@ -31,6 +31,8 @@
 RECTWAVEGUIDE::RECTWAVEGUIDE() : TRANSLINE()
 {
     m_Name = "RectWaveGuide";
+    fc10 = 1.0;                 // Cutoff frequency for TE10 mode
+
     Init();
 }
 

pcb_calculator/transline/transline.cpp

@@ -71,6 +71,7 @@ TRANSLINE::TRANSLINE()
 {
     m_parameters[MURC_PRM] = 1.0;
     m_Name                 = nullptr;
+    ang_l                  = 0.0;       // Electrical length in angle
     Init();
 }