Postgresql native, fix readLogLevelFromConfiguration

With:
osl_getModuleURLFromFunctionAddress(
    reinterpret_cast<oslGenericFunction>(readLogLevelFromConfiguration), &fileName.pData );

The method retrieves the path to libpostgresql-sdbc-impllo.so, eg:
file:///home/julien/lo/libreoffice/instdir/program/libpostgresql-sdbc-impllo.so

but then instead of retrieving path + "postgresql-sdbc.ini"
we obtained ".so" filename + "postgresql-sdbc.ini"=>
libpostgresql-sdbc-impllo.sopostgresql-sdbc.ini

Regression from 1bdb2b6f06
author	Noel Grandin <noel@peralex.com>	2013-11-04 13:51:21 +0200
committer	Noel Grandin <noel@peralex.com>	2013-11-11 11:21:25 +0200
commit	1bdb2b6f06 (patch)
tree	1d941e1795
parent	2f2416ff06 (diff)
remove unnecessary use of OUString constructor in CONNECTIVITY module

Change-Id: Ie7be4b1078760f94d34dd1f6cb9932bd7fa70962
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/89303
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

connectivity/source/drivers/postgresql/pq_connection.cxx

@@ -131,7 +131,7 @@ static LogLevel readLogLevelFromConfiguration()
     OUString fileName;
     osl_getModuleURLFromFunctionAddress(
         reinterpret_cast<oslGenericFunction>(readLogLevelFromConfiguration), &fileName.pData );
-    fileName = fileName.copy( fileName.lastIndexOf( '/' )+1 ) +
+    fileName = fileName.copy( 0, fileName.lastIndexOf( '/' )+1 ) +
 #ifdef MACOSX
         "../Resources/"
 #endif