--- wildmidi_lib.cpp.orig	2021-12-15 07:39:58.168708000 +0000
+++ wildmidi_lib.cpp	2021-12-15 07:41:17.698486000 +0000
@@ -1321,23 +1321,38 @@
 get_patch_data(unsigned short patchid) {
 	struct _patch *search_patch;
 
-	std::lock_guard<std::mutex> lock(patch_lock);
+	/*
+	 * Uh, hey, no, sorry pal, you can't use this
+	 * construction here. This function can call itself
+	 * recursively, which means you will recursively
+	 * try to acquire the patch_lock mutex, which is
+	 * not allowed with lock_guard.
+	 */
 
+/*	std::lock_guard<std::mutex> lock(patch_lock); */
+
+	patch_lock.lock();
 	search_patch = patch[patchid & 0x007F];
 
 	if (search_patch == NULL) {
+		patch_lock.unlock();
 		return NULL;
 	}
 
 	while (search_patch) {
 		if (search_patch->patchid == patchid) {
+			patch_lock.unlock();
 			return search_patch;
 		}
 		search_patch = search_patch->next;
 	}
+
+	patch_lock.unlock();
+
 	if ((patchid >> 8) != 0) {
 		return (get_patch_data(patchid & 0x00FF));
 	}
+
 	return NULL;
 }
 
@@ -1380,6 +1395,7 @@
 	struct _sample *return_sample = NULL;
 
 	std::lock_guard<std::mutex> lock(patch_lock);
+
 	if (sample_patch == NULL) {
 		return NULL;
 	}