tests: Turn virFileWrapperAddPrefix to void

In theory, it's nice to have virFileWrapperAddPrefix() return a
value that indicates if the function succeeded or not. But in
practice, nobody checks for that and in fact blindly believes
that the function succeeded. Therefore, make the function return
nothing and just abort() if it would fail.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NMartin Kletzander <mkletzan@redhat.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

tests/virfilewrapper.c

@@ -66,13 +66,15 @@ static void init_syms(void)
 }
 
 
-int
+void
 virFileWrapperAddPrefix(const char *prefix,
                         const char *override)
 {
     /* Both parameters are mandatory */
-    if (!prefix || !override)
-        return -1;
+    if (!prefix || !override) {
+        fprintf(stderr, "Attempt to add invalid path override\n");
+        abort();
+    }
 
     init_syms();
 
@@ -80,10 +82,9 @@ virFileWrapperAddPrefix(const char *prefix,
         VIR_APPEND_ELEMENT_QUIET(overrides, noverrides, override) < 0) {
         VIR_FREE(prefixes);
         VIR_FREE(overrides);
-        return -1;
+        fprintf(stderr, "Unable to add path override for '%s'\n", prefix);
+        abort();
     }
-
-    return 0;
 }
 
 

tests/virfilewrapper.h

@@ -19,7 +19,7 @@
 #ifndef LIBVIRT_VIRFILEWRAPPER_H
 # define LIBVIRT_VIRFILEWRAPPER_H
 
-int
+void
 virFileWrapperAddPrefix(const char *prefix,
                         const char *override);