Fix error number

Author: mbovel

tests/neg/17284.check

@@ -1,4 +1,4 @@
--- [E183] Potential Issue Error: tests/neg/17284.scala:4:6 -------------------------------------------------------------
+-- [E187] Potential Issue Error: tests/neg/17284.scala:4:6 -------------------------------------------------------------
 4 |  451.synchronized {} // error
   |  ^^^^^^^^^^^^^^^^
   |  Suspicious synchronized call on boxed class
@@ -8,7 +8,7 @@
   | You called the synchronized method on a boxed primitive. This might not be what
   | you intended.
    ---------------------------------------------------------------------------------------------------------------------
--- [E183] Potential Issue Error: tests/neg/17284.scala:8:4 -------------------------------------------------------------
+-- [E187] Potential Issue Error: tests/neg/17284.scala:8:4 -------------------------------------------------------------
 8 |  x.synchronized {} // error
   |  ^^^^^^^^^^^^^^
   |  Suspicious synchronized call on boxed class
@@ -18,7 +18,7 @@
   | You called the synchronized method on a boxed primitive. This might not be what
   | you intended.
    ---------------------------------------------------------------------------------------------------------------------
--- [E183] Potential Issue Error: tests/neg/17284.scala:11:7 ------------------------------------------------------------
+-- [E187] Potential Issue Error: tests/neg/17284.scala:11:7 ------------------------------------------------------------
 11 |  true.synchronized {} // error
    |  ^^^^^^^^^^^^^^^^^
    |  Suspicious synchronized call on boxed class

tests/neg/i17266.check

@@ -20,7 +20,7 @@
    | resolved to calls on Predef or on imported methods. This might not be what
    | you intended.
     --------------------------------------------------------------------------------------------------------------------
--- [E183] Potential Issue Error: tests/neg/i17266.scala:22:4 -----------------------------------------------------------
+-- [E187] Potential Issue Error: tests/neg/i17266.scala:22:4 -----------------------------------------------------------
 22 |  1.synchronized { // error
    |  ^^^^^^^^^^^^^^
    |  Suspicious synchronized call on boxed class