Merge remote-tracking branch 'origin/GP-3591_ghidra1_CreateFunctionBody'

into patch (Closes #5412)

Ghidra/Features/Base/src/main/java/ghidra/app/cmd/function/CreateFunctionCmd.java

@@ -331,7 +331,7 @@ public class CreateFunctionCmd extends BackgroundCommand {
 
 		Map<Function, AddressSetView> bodyChangeMap = new HashMap<>();
 		// If I ain't got nobody left after extracting overlapping functions
-		if (body.isEmpty()) {
+		if (body.isEmpty() || !body.contains(entry)) {
 			// try subtracting this body from existing functions
 			//   need to compute a bodyChangeMap if affecting other functions
 			//   in case creation of this function fails