Plug some memory leaks.

Patches from rpm5.org / JBJ.

lib/rpmal.c

@@ -816,6 +816,7 @@ rpmalAllSatisfiesDepend(const rpmal al, const rpmds ds, alKey * keyp)
 	if (ret != NULL && *ret != NULL)
 	    return ret;
 	/* ... then, look for files "provided" by package. */
+	ret = _free(ret);
     }
 
     ai = &al->index;

lib/rpmrc.c

@@ -1440,7 +1440,8 @@ static void rpmSetVarArch(int var, const char * val, const char * arch)
 	}
     }
 
-    next->value = xstrdup(val);		/* XXX memory leak, hard to plug */
+    next->value = _free(next->value);
+    next->value = xstrdup(val);
     next->arch = (arch ? xstrdup(arch) : NULL);
 }
 

rpmio/macro.c

@@ -1998,8 +1998,10 @@ rpmInitMacros(MacroContext mc, const char * macrofiles)
 	    continue;
 
 	/* Read macros from each file. */
-	for (i = 0; i < ac; i++)
+	for (i = 0; i < ac; i++) {
 	    (void) rpmLoadMacroFile(mc, av[i]);
+	    av[i] = _free(av[i]);
+	}
 	av = _free(av);
     }
     mfiles = _free(mfiles);