tests: check and handle error for virAsprintf() calls

tests/vmx2xmltest.c

@@ -179,7 +179,9 @@ testParseVMXFileName(const char *fileName, void *opaque ATTRIBUTE_UNUSED)
             goto cleanup;
         }
 
-        virAsprintf(&src, "[%s] %s", datastoreName, directoryAndFileName);
+        if (virAsprintf(&src, "[%s] %s", datastoreName,
+                        directoryAndFileName) < 0)
+            goto cleanup;
     } else if (STRPREFIX(fileName, "/")) {
         /* Found absolute path referencing a file outside a datastore */
         src = strdup(fileName);
@@ -188,7 +190,8 @@ testParseVMXFileName(const char *fileName, void *opaque ATTRIBUTE_UNUSED)
         src = NULL;
     } else {
         /* Found single file name referencing a file inside a datastore */
-        virAsprintf(&src, "[datastore] directory/%s", fileName);
+        if (virAsprintf(&src, "[datastore] directory/%s", fileName) < 0)
+            goto cleanup;
     }
 
   cleanup:

tests/xml2vmxtest.c

@@ -193,8 +193,9 @@ testFormatVMXFileName(const char *src, void *opaque ATTRIBUTE_UNUSED)
             directoryAndFileName += strspn(directoryAndFileName, " ");
         }
 
-        virAsprintf(&absolutePath, "/vmfs/volumes/%s/%s", datastoreName,
-                    directoryAndFileName);
+        if (virAsprintf(&absolutePath, "/vmfs/volumes/%s/%s", datastoreName,
+                        directoryAndFileName) < 0)
+            goto cleanup;
     } else if (STRPREFIX(src, "/")) {
         /* Found absolute path */
         absolutePath = strdup(src);