make increment the same across tests.

Author: echo-branch

Branch-TestBed/Branch-SDK-Tests/BranchLoggerTests.m

@@ -27,7 +27,7 @@ - (void)testLoggingEnabled_NOByDefault {
 
     __block int count = 0;
     logger.logCallback = ^(NSString * _Nonnull message, BranchLogLevel logLevel, NSError * _Nullable error) {
-        count++;
+        count = count + 1;
     };
     [logger logError:@"msg" error:nil];
 
@@ -40,7 +40,7 @@ - (void)testLoggingEnabled_Yes {
 
     __block int count = 0;
     logger.logCallback = ^(NSString * _Nonnull message, BranchLogLevel logLevel, NSError * _Nullable error) {
-        count++;
+        count = count + 1;
     };
 
     [logger logError:@"msg" error:nil];
@@ -56,7 +56,7 @@ - (void)testLoggingIgnoresNil {
 
     __block int count = 0;
     logger.logCallback = ^(NSString * _Nonnull message, BranchLogLevel logLevel, NSError * _Nullable error) {
-        count++;
+        count = count + 1;
     };
 
     [logger logError:nil error:nil];
@@ -69,7 +69,7 @@ - (void)testLoggingIgnoresEmptyString {
 
     __block int count = 0;
     logger.logCallback = ^(NSString * _Nonnull message, BranchLogLevel logLevel, NSError * _Nullable error) {
-        count++;
+        count = count + 1;
     };
 
     [logger logError:@"" error:nil];