fix link error with multiply used edaapl.cpp

common/edaappl.cpp

@@ -1162,7 +1162,7 @@ bool EDA_APP::LockFile( const wxString& fileName )
 bool EDA_APP::SetFootprintLibTablePath()
 {
     wxString    path;
-    wxString    kisysmod = FP_LIB_TABLE::GlobalPathEnvVariableName();
+    wxString    kisysmod( wxT( KISYSMOD ) );
 
     // Set the KISYSMOD environment variable for the current process if it is not already
     // defined in the user's environment.  This is required to expand the global footprint

common/fp_lib_table.cpp

@@ -736,7 +736,7 @@ const wxString FP_LIB_TABLE::ProjectPathEnvVariableName()
 
 const wxString FP_LIB_TABLE::GlobalPathEnvVariableName()
 {
-    return  wxT( "KISYSMOD" );
+    return  wxT( KISYSMOD );
 }
 
 

include/fp_lib_table.h

@@ -34,6 +34,8 @@
 #include <io_mgr.h>
 
 
+#define KISYSMOD        "KISYSMOD"
+
 class wxFileName;
 class OUTPUTFORMATTER;
 class MODULE;