fix path in patch

packages/dart/sdk-runtime-bin-directory_android.cc.patch

@@ -1,5 +1,5 @@
---- /home/vishal/.termux-build/dart/src/sdk/runtime/bin/directory_android.cc	2019-06-14 00:27:54.559512261 +0530
-+++ /home/vishal/.termux-build/dart/src/sdk/runtime/bin/directory_android.cc	2019-06-14 00:32:21.470848945 +0530
+--- ./sdk/runtime/bin/directory_android.cc	2019-06-14 00:27:54.559512261 +0530
++++ ./sdk/runtime/bin/directory_android.cc	2019-06-14 00:32:21.470848945 +0530
 @@ -429,7 +429,7 @@
    // TODO(4413): In the long run, when running in an application we should
    // probably use the appropriate directory from the Android API,
@@ -9,8 +9,8 @@
    struct stat st;
    if (stat(kAndroidTempDir, &st) != 0) {
      mkdir(kAndroidTempDir, 0777);
---- /home/vishal/.termux-build/dart/src/sdk/runtime/vm/os_android.cc	2019-06-14 23:47:25.713639563 +0530
-+++ /home/vishal/.termux-build/dart/src/sdk/runtime/vm/os_android.cc	2019-06-14 23:47:19.743694949 +0530
+--- ./sdk/runtime/vm/os_android.cc	2019-06-14 23:47:25.713639563 +0530
++++ ./sdk/runtime/vm/os_android.cc	2019-06-14 23:47:19.743694949 +0530
 @@ -42,7 +42,7 @@
        return;
      }