LOCALEDIR is used by EXIV2_ENABLE_BUILD_PO so make sure it is defined

Otherwise it is possible to install translations in / if EXIV2_ENABLE_NLS=OFF.

config/findDependencies.cmake

@@ -24,6 +24,13 @@ if (EXIV2_ENABLE_XMP)
     find_package(EXPAT REQUIRED)
 endif (EXIV2_ENABLE_XMP)
 
+if( NOT LOCALEDIR )
+    set( LOCALEDIR "${CMAKE_INSTALL_LOCALEDIR}" )
+    if( WIN32 )
+        STRING( REPLACE "/" "\\\\" LOCALEDIR ${LOCALEDIR} )
+    endif( WIN32 )
+endif()
+
 if( EXIV2_ENABLE_NLS )
     find_package(Intl)
     if(Intl_FOUND)
@@ -32,12 +39,6 @@ if( EXIV2_ENABLE_NLS )
     else()
         set(LIBINTL_LIBRARIES)
     endif()
-    if( NOT LOCALEDIR )
-        set( LOCALEDIR "${CMAKE_INSTALL_LOCALEDIR}" )
-        if( WIN32 )
-            STRING( REPLACE "/" "\\\\" LOCALEDIR ${LOCALEDIR} )
-        endif( WIN32 )
-    endif( NOT LOCALEDIR )
     add_definitions( -DEXV_LOCALEDIR="${LOCALEDIR}" )
     set( ENABLE_NLS 1 )
     # TODO : This is assuming that Intl is always found. This check should be improved and remove