version: consider pkg-rX and pkg to be the same version

src/version.c

@@ -218,6 +218,11 @@ int apk_version_compare_blob(apk_blob_t a, apk_blob_t b)
 	if (at == bt)
 		return APK_VERSION_EQUAL;
 
+	/* if only difference is pkgrev, they are equal. */
+	if ((at == TOKEN_REVISION_NO && bt == TOKEN_END) ||
+	    (at == TOKEN_END && bt == TOKEN_REVISION_NO))
+		return APK_VERSION_EQUAL;
+
 	/* leading version components and their values are equal,
 	 * now the non-terminating version is greater unless it's a suffix
 	 * indicating pre-release */