Imported Upstream version 5.14.0.106

Former-commit-id: 03fab0f68b93e237c47a03f7d3793d7f5d7c276d

external/cecil/Mono.Cecil/MethodDefinition.cs

@@ -165,6 +165,8 @@ namespace Mono.Cecil {
 				// we reset Body to null in ILSpy to save memory; so we need that operation to be thread-safe
 				lock (module.SyncRoot) {
 					body = value;
+					if (value == null)
+						this.debug_info = null;
 				}
 			}
 		}