fix: improve type inference for generics in invoke insn (#927)

jadx-core/src/test/java/jadx/tests/integration/types/TestGenerics5.java

@@ -0,0 +1,44 @@
+package jadx.tests.integration.types;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+
+import jadx.tests.api.IntegrationTest;
+
+import static jadx.tests.api.utils.assertj.JadxAssertions.assertThat;
+
+public class TestGenerics5 extends IntegrationTest {
+
+	public static class TestCls {
+		private InheritableThreadLocal<Map<String, String>> inheritableThreadLocal;
+
+		public void put(String key, String val) {
+			if (key == null) {
+				throw new IllegalArgumentException("key cannot be null");
+			}
+			Map<String, String> map = this.inheritableThreadLocal.get();
+			if (map == null) {
+				map = new HashMap<>();
+				this.inheritableThreadLocal.set(map);
+			}
+			map.put(key, val);
+		}
+
+		public void remove(String key) {
+			Map<String, String> map = this.inheritableThreadLocal.get();
+			if (map != null) {
+				map.remove(key);
+			}
+		}
+	}
+
+	@Test
+	public void test() {
+		noDebugInfo();
+		assertThat(getClassNode(TestCls.class))
+				.code()
+				.countString(2, "Map<String, String> map = this.inheritableThreadLocal.get();");
+	}
+}