(propdel) remove unneeded exec flags

doc/Makefile

@@ -11,7 +11,7 @@ install: FORCE
 	$(SCCBOX) install -f manpages/xschem.1 "$(MANDIR)"/man1/xschem.1
 
 install_pdf: FORCE
-	sh -c "cd xschem_man; ./create_pdf_man" && $(SCCBOX) install -f -d xschem_man/xschem_man.pdf "$(XDOCDIR)"/xschem_man
+	sh -c "cd xschem_man; . ./create_pdf_man" && $(SCCBOX) install -f -d xschem_man/xschem_man.pdf "$(XDOCDIR)"/xschem_man
 
 uninstall: FORCE
 	$(SCCBOX) rm -f "$(XDOCDIR)"/xschem_man/*

doc/xschem_man/create_pdf_man

@@ -43,9 +43,9 @@ generate_pdf () {
 # check for htmldoc else return error exit status
 if ! [ -x "$(command -v htmldoc)" ]; then
     echo "htmldoc could not be found"
-    exit 1
+    return 1
 fi
 
 #### generate pdf doc
 generate_pdf xschem_man.html xschem_man.pdf
-exit 0
+return 0