Fix slash on pgpro_upgrade call

dmpgpro · dmpgpro · commit 200dd9464133 · 2017-08-31T17:42:41.000+03:00
diff --git a/nsis/postgresql.nsi b/nsis/postgresql.nsi
@@ -511,7 +511,7 @@ Section $(PostgreSQLString) sec1
     ; run pgpro-upgrade script and
     
     DetailPrint "Performing catalog upgradeon $DATA_DIR"
-    nsExec::ExecToStack '"$INSTDIR/scripts/pgpro_upgrade" "$DATA_DIR"'
+    nsExec::ExecToStack '"$INSTDIR\scripts\pgpro_upgrade" "$DATA_DIR"'
     Pop $0
     Pop $1 # printed text, up to ${NSIS_MAX_STRLEN}
     DetailPrint "$1"
