private ClangLine findFunctionSignatureLine(List<ClangLine> lines) {
		for (ClangLine clangLine : lines) {
			int numTokens = clangLine.getNumTokens();
			for (int i = 0; i < numTokens; i++) {
				ClangToken token = clangLine.getToken(i);
				if (token instanceof ClangFuncNameToken) {
					return clangLine;
				}
			}
		}
		return null;
	}
Clears the existing line number pairing
Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/CodeDiffFieldPanelCoordinator.java