unit1604: fixed compilation under Windows, broken in the previous commit

tests/unit/unit1604.c

@@ -45,26 +45,28 @@ static void unit_stop(void)
 static char *getflagstr(int flags)
 {
   char *buf = malloc(256);
-  abort_unless(buf, "out of memory");
-  snprintf(buf, 256, "%s,%s,%s,%s",
-    ((flags & SANITIZE_ALLOW_COLONS) ? "SANITIZE_ALLOW_COLONS" : ""),
-    ((flags & SANITIZE_ALLOW_PATH) ? "SANITIZE_ALLOW_PATH" : ""),
-    ((flags & SANITIZE_ALLOW_RESERVED) ? "SANITIZE_ALLOW_RESERVED" : ""),
-    ((flags & SANITIZE_ALLOW_TRUNCATE) ? "SANITIZE_ALLOW_TRUNCATE" : ""));
+  if(buf) {
+      snprintf(buf, 256, "%s,%s,%s,%s",
+        ((flags & SANITIZE_ALLOW_COLONS) ? "SANITIZE_ALLOW_COLONS" : ""),
+        ((flags & SANITIZE_ALLOW_PATH) ? "SANITIZE_ALLOW_PATH" : ""),
+        ((flags & SANITIZE_ALLOW_RESERVED) ? "SANITIZE_ALLOW_RESERVED" : ""),
+        ((flags & SANITIZE_ALLOW_TRUNCATE) ? "SANITIZE_ALLOW_TRUNCATE" : ""));
+  }
   return buf;
 }
 
 static char *getcurlcodestr(int cc)
 {
   char *buf = malloc(256);
-  abort_unless(buf, "out of memory");
-  snprintf(buf, 256, "%s (%d)",
-    (cc == SANITIZE_ERR_OK ? "SANITIZE_ERR_OK" :
-     cc == SANITIZE_ERR_BAD_ARGUMENT ? "SANITIZE_ERR_BAD_ARGUMENT" :
-     cc == SANITIZE_ERR_INVALID_PATH ? "SANITIZE_ERR_INVALID_PATH" :
-     cc == SANITIZE_ERR_OUT_OF_MEMORY ? "SANITIZE_ERR_OUT_OF_MEMORY" :
-     "unexpected error code - add name"),
-    cc);
+  if(buf) {
+      snprintf(buf, 256, "%s (%d)",
+        (cc == SANITIZE_ERR_OK ? "SANITIZE_ERR_OK" :
+         cc == SANITIZE_ERR_BAD_ARGUMENT ? "SANITIZE_ERR_BAD_ARGUMENT" :
+         cc == SANITIZE_ERR_INVALID_PATH ? "SANITIZE_ERR_INVALID_PATH" :
+         cc == SANITIZE_ERR_OUT_OF_MEMORY ? "SANITIZE_ERR_OUT_OF_MEMORY" :
+         "unexpected error code - add name"),
+        cc);
+  }
   return buf;
 }
 
@@ -310,8 +312,11 @@ UNITTEST_START
     }
 
     flagstr = getflagstr(data[i].flags);
+    abort_unless(flagstr, "out of memory");
     received_ccstr = getcurlcodestr(res);
+    abort_unless(received_ccstr, "out of memory");
     expected_ccstr = getcurlcodestr(data[i].expected_result);
+    abort_unless(expected_ccstr, "out of memory");
 
     unitfail++;
     fprintf(stderr, "\n"