Let building lpsolve fail when its ccc script fails

(hopefully, the various ccc script variants do not include code that would
unintentionally fail the script with -e)

Change-Id: Ia04291983d99a8cf5a74e6a0078e179c17a93f2b

external/lpsolve/ExternalProject_lpsolve.mk

@@ -33,7 +33,7 @@ else # $(OS)!=WNT
 $(call gb_ExternalProject_get_state_target,lpsolve,build):
 	$(call gb_ExternalProject_run,build,\
 		CC="$(CC) $(if $(debug),$(gb_COMPILERNOOPTFLAGS) $(gb_DEBUG_CFLAGS),$(gb_COMPILEROPTFLAGS))" \
-		sh $(if $(filter MACOSX,$(OS)),ccc.osx, \
+		sh -e $(if $(filter MACOSX,$(OS)),ccc.osx, \
 		$(if $(filter TRUE,$(DISABLE_DYNLOADING)),ccc.static, \
 		$(if $(filter AIXGCC,$(OS)$(COM)),ccc.aix.gcc, \
 		ccc))) \