Add default switch cases.

Bug 15387371

Change-Id: I97644bfd9dbdc1109630199bc897f8b2572d5e83
Reviewed-on: https://swiftshader-review.googlesource.com/4502
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
diff --git a/src/Shader/Shader.cpp b/src/Shader/Shader.cpp
index 82a038d..a0ece65 100644
--- a/src/Shader/Shader.cpp
+++ b/src/Shader/Shader.cpp
@@ -1578,6 +1578,8 @@
 					dirtyConstantsB = instruction[i]->dst.index + 1;
 				}
 				break;
+			default:
+				break;
 			}
 		}
 	}
@@ -1627,6 +1629,8 @@
 			case OPCODE_DEFB:
 			case OPCODE_DEFI:
 				containsDefine = true;
+			default:
+				break;
 			}
 		}
 
@@ -1798,6 +1802,8 @@
 					}
 				}
 				break;
+			default:
+				break;
 			}
 		}
 	}
@@ -1837,6 +1843,7 @@
 				case PARAMETER_TEMP:   dynamicallyIndexedTemporaries = true; break;
 				case PARAMETER_INPUT:  dynamicallyIndexedInput = true;       break;
 				case PARAMETER_OUTPUT: dynamicallyIndexedOutput = true;      break;
+				default: break;
 				}
 			}
 
@@ -1852,6 +1859,7 @@
 					case PARAMETER_TEMP:   dynamicallyIndexedTemporaries = true; break;
 					case PARAMETER_INPUT:  dynamicallyIndexedInput = true;       break;
 					case PARAMETER_OUTPUT: dynamicallyIndexedOutput = true;      break;
+					default: break;
 					}
 				}
 			}