Properly wait for spawned processes to end

source/page.d

@@ -111,15 +111,20 @@ class Page {
 		pandoc.stdin.writeln();
 		pandoc.stdin.flush();
 		pandoc.stdin.close();
+		pandoc.pid.wait();
 		string result;
 		string line;
 		while ((line = pandoc.stdout.readln()) !is null) {
 			result ~= line;
-			logf("Pandoc stdout: %s", line);
+			debug {
+				logf("Pandoc stdout: %s", line);
+			}
 		}
 
 		while ((line = pandoc.stderr.readln()) !is null) {
-			logf("Pandoc stderr: %s", line);
+			debug {
+				logf("Pandoc stderr: %s", line);
+			}
 		}
 
 		return result;