Fix: leaking file descriptors

(cherry picked from commit 495d73a67f)

src/console_cmds.cpp

@@ -1044,6 +1044,7 @@ DEF_CONSOLE_CMD(ConExec)
 	}
 
 	if (_script_current_depth == 11) {
+		FioFCloseFile(script_file);
 		IConsoleError("Maximum 'exec' depth reached; script A is calling script B is calling script C ... more than 10 times.");
 		return true;
 	}

src/network/network_content.cpp

@@ -418,7 +418,8 @@ static bool GunzipFile(const ContentInfo *ci)
 	FILE *ftmp = fopen(GetFullFilename(ci, true).c_str(), "rb");
 	if (ftmp == nullptr) return false;
 	/* Duplicate the handle, and close the FILE*, to avoid double-closing the handle later. */
-	gzFile fin = gzdopen(dup(fileno(ftmp)), "rb");
+	int fdup = dup(fileno(ftmp));
+	gzFile fin = gzdopen(fdup, "rb");
 	fclose(ftmp);
 
 	FILE *fout = fopen(GetFullFilename(ci, false).c_str(), "wb");
@@ -457,7 +458,12 @@ static bool GunzipFile(const ContentInfo *ci)
 		}
 	}
 
-	if (fin != nullptr) gzclose(fin);
+	if (fin != nullptr) {
+		gzclose(fin);
+	} else if (fdup != -1) {
+		/* Failing gzdopen does not close the passed file descriptor. */
+		close(fdup);
+	}
 	if (fout != nullptr) fclose(fout);
 
 	return ret;